Physics › Modern Physics
Modern Physics Questions
749 questions across 7 subtopics — with step-by-step solutions.
Atomic structure(312)
- In a hypothetical hydrogen atom the electr... | | TestHub
- For a hydrogen atom, the ratio of the larg... | Physics | TestHub
- The frequency of revolution of the electro... | Physics | TestHub
- Arrange the following in the ascending ord... | Physics | TestHub
- Assuming the validity of Bohr's atomic mod... | Physics | TestHub
- Given below are two statements : one is la... | Physics | TestHub
- Energy liberated in the de-excitation of h... | Physics | TestHub
- A charged particle of charge q and mass m... | Physics | TestHub
- A particle of mass m is dropped on an elas... | Physics | TestHub
- A non-relativistic particle of mass m is h... | Physics | TestHub
- A block of mass m is oscillating on a smoo... | Physics | TestHub
- Given below are two statements:Assertion (... | Physics | TestHub
- A hydrogen atom, initially at rest in its... | Physics | TestHub
- If energy is required to ionize the hydrog... | Physics | TestHub
- If the binding energy of the electron in a... | Physics | TestHub
- Which of the following atoms has the lowes... | Physics | TestHub
- The wavelengths involved in the spectrum o... | Physics | TestHub
- The manifestation of band structure in sol... | Physics | TestHub
- The diagram shows the energy levels for an... | Physics | TestHub
- If the wavelength of the line of Lyman ser... | Physics | TestHub
- An alpha nucleus of energy bombards a heav... | Physics | TestHub
- Which of the following transitions in hydr... | Physics | TestHub
- The largest wavelength in the ultraviolet... | Physics | TestHub
- Paragraph:In a mixture of gas is singly io... | Physics | TestHub
- Suppose an electron is attracted towards t... | Physics | TestHub
- Paragraph:In a mixture of gas is singly io... | Physics | TestHub
- Paragraph:In a mixture of gas is singly io... | Physics | TestHub
- Paragraph:When a particle is restricted to... | Physics | TestHub
- Paragraph:When a particle is restricted to... | Physics | TestHub
- Paragraph:When a particle is restricted to... | Physics | TestHub
- The transition from the state to in a hydr... | Physics | TestHub
- Paragraph: The key feature of Bohr's theor... | Physics | TestHub
- Paragraph: The key feature of Bohr's theor... | Physics | TestHub
- Paragraph:The key feature of Bohr's theory... | Physics | TestHub
- The wavelength of the first spectral line... | Physics | TestHub
- Energy required for the electron excitatio... | Physics | TestHub
- A diatomic molecule is made of two masses... | Physics | TestHub
- Ionisation energy of Li (Lithium) atom in... | Physics | TestHub
- Hydrogen atom is excited from ground state... | Physics | TestHub
- In the Rutherford experiment, -particles a... | Physics | TestHub
- A doubly ionised atom is excited from its... | Physics | TestHub
- A hypothetical atom has only three energy... | Physics | TestHub
- The electron of a hydrogen atom makes a tr... | Physics | TestHub
- Which of the plots shown in the figure rep... | Physics | TestHub
- In the Bohr's model of hydrogen-like atom... | Physics | TestHub
- In a hydrogen like atom electron makes tra... | Physics | TestHub
- A electron beam is used to bombard gaseous... | Physics | TestHub
- The radius of the orbit of an electron in... | Physics | TestHub
- In the Bohr model an electron moves in a c... | Physics | TestHub
- Orbits of a particle moving in a circle ar... | Physics | TestHub
- Hydrogen (1H1), Deuterium (1H2), singly io... | Physics | TestHub
- If the binding energy of the electron in a... | Physics | TestHub
- The radiation corresponding totransition o... | Physics | TestHub
- Match the List-I (Phenomenon associated wi... | Physics | TestHub
- As an electron makes a transition from an... | Physics | TestHub
- If one were to apply the Bohr model to a p... | Physics | TestHub
- A neutron moving with speed v makes a head... | Physics | TestHub
- A hydrogen atom in its ground state is irr... | Physics | TestHub
- A neutron moving with a speed 'v' makes a... | Physics | TestHub
- An electron in a hydrogen atom makes a tra... | Physics | TestHub
- Highly excited states for hydrogen like at... | Physics | TestHub
- Some energy levels of a molecule are shown... | Physics | TestHub
- An electron in a hydrogen atom undergoes a... | Physics | TestHub
- According to Bohr's theory, the time avera... | Physics | TestHub
- The acceleration of an electron in the fir... | Physics | TestHub
- The energy required to remove the electron... | Physics | TestHub
- Muon is negatively charged with a mass , w... | Physics | TestHub
- The energy required to remove the electron... | Physics | TestHub
- Two electrons are moving with non-relativi... | Physics | TestHub
- An electron from various excited states of... | Physics | TestHub
- Consider a hydrogen-like ionized atom with... | Physics | TestHub
- If the series limit frequency of the Lyman... | Physics | TestHub
- Both the nucleus and the atom of some elem... | Physics | TestHub
- A hydrogen atom, initially in the ground s... | Physics | TestHub
- Radiation coming from transitionstoof hydr... | Physics | TestHub
- An excitedion emits two photons in success... | Physics | TestHub
- A free hydrogen atom after absorbing a pho... | Physics | TestHub
- In a Frank - Hertz experiment, an electron... | Physics | TestHub
- Taking the wavelength of first Balmer line... | Physics | TestHub
- The electron in a hydrogen atom first jump... | Physics | TestHub
- In,electron in first Bohr orbit is excited... | Physics | TestHub
- In a hydrogen like atom, when an electron... | Physics | TestHub
- A particle of massmoves in a circular orbi... | Physics | TestHub
- Aion is in its first excited state. Its io... | Physics | TestHub
- A nucleus splits into two nuclear parts wh... | Physics | TestHub
- The energy required to ionise a hydrogen l... | Physics | TestHub
- In the line spectra of hydrogen atom, diff... | Physics | TestHub
- The time period of revolution of electron... | Physics | TestHub
- A particle of massmoves in circular orbits... | Physics | TestHub
- The first member of the Balmer series of h... | Physics | TestHub
- In a hydrogen atom the electron makes a tr... | Physics | TestHub
- A free electron ofenergy collides with aio... | Physics | TestHub
- Imagine that the electron in a hydrogen at... | Physics | TestHub
- A particular hydrogen like ion emits radia... | Physics | TestHub
- The wavelength of the photon emitted by a... | Physics | TestHub
- A particle of massmoves in a circular orbi... | Physics | TestHub
- According to Bohr atom model, in which of... | Physics | TestHub
- The radiation corresponding totransition o... | Physics | TestHub
- In Bohr's atomic model, the electron is as... | Physics | TestHub
- different wavelength may be observed in th... | Physics | TestHub
- Which level of the single ionized carbon h... | Physics | TestHub
- Ifandare the wavelengths of the third memb... | Physics | TestHub
- The recoil speed of a hydrogen atom after... | Physics | TestHub
- The atomic hydrogen emits a line spectrum... | Physics | TestHub
- Which of the following statement(s) is (ar... | Physics | TestHub
- In the given figure, the energy levels of... | Physics | TestHub
- If an electron is moving in theorbit of th... | Physics | TestHub
- The first three spectral lines of-atom in... | Physics | TestHub
- TheX-ray of molybdenum has wavelength. If... | Physics | TestHub
- A hydrogen atom in its ground state absorb... | Physics | TestHub
- In a hydrogen spectrumbe the wavelength of... | Physics | TestHub
- In Bohr's atomic model of hydrogen, letand... | Physics | TestHub
- is the ratio of energies of photons produc... | Physics | TestHub
- Choose the correct option from the followi... | Physics | TestHub
- Which of the following figure represents t... | Physics | TestHub
- A beam of monochromatic light is used to e... | Physics | TestHub
- Hydrogen atom from excited state comes to... | Physics | TestHub
- Given below are two statementsStatement I:... | Physics | TestHub
- Find the ratio of energies of photons prod... | Physics | TestHub
- The momentum of an electron revolving inor... | Physics | TestHub
- andare the impact parameters corresponding... | Physics | TestHub
- Read the following statements:(A) Volume o... | Physics | TestHub
- The ratio for the speed of the electron in... | Physics | TestHub
- Speed of an electron in Bohr’sorbit for Hy... | Physics | TestHub
- Aelectron beam is used to bombard gaseous... | Physics | TestHub
- The wavelength of the radiation emitted is... | Physics | TestHub
- The radius of fifth orbit ofisTake: radius... | Physics | TestHub
- As per given figure and are the first, sec... | Physics | TestHub
- A monochromatic light is incident on a hyd... | Physics | TestHub
- The mass of proton, neutron and helium nuc... | Physics | TestHub
- The radius of electron's second stationary... | Physics | TestHub
- The ratio of wavelength of spectral linesa... | Physics | TestHub
- The energy ofion in its first state is, (T... | Physics | TestHub
- A photon is emitted in transition fromleve... | Physics | TestHub
- The energy levels of an atom is shown is f... | Physics | TestHub
- Nucleus a havingand equal number of proton... | Physics | TestHub
- The energy levels of an hydrogen atom are... | Physics | TestHub
- Ifbe the lowest wavelength of Lyman series... | Physics | TestHub
- An electron of a hydrogen like atom, havin... | Physics | TestHub
- An atom absorbs a photon of wavelengthand... | Physics | TestHub
- The radius oforbit ofof Bohr's model isand... | Physics | TestHub
- A light of energyis incident on a hydrogen... | Physics | TestHub
- For hydrogen atom, and are the wavelengths... | Physics | TestHub
- The angular momentum for the electron in B... | Physics | TestHub
- In Franck-Hertz experiment, the first dip... | Physics | TestHub
- The radius of third stationary orbit of el... | Physics | TestHub
- If the wavelength of the first member of L... | Physics | TestHub
- An electron of hydrogen atom on an excited... | Physics | TestHub
- The mass defect in a particular reaction i... | Physics | TestHub
- The angular momentum of an electron in a h... | Physics | TestHub
- If Rydberg's constant is, the longest wave... | Physics | TestHub
- The ratio of the magnitude of the kinetic... | Physics | TestHub
- In an alpha particle scattering experiment... | Physics | TestHub
- An electron rotates in a circle around a n... | Physics | TestHub
- An electron revolving inBohr orbit has mag... | Physics | TestHub
- Given below are two statements:Statement I... | Physics | TestHub
- When a hydrogen atom going fromtoemits a p... | Physics | TestHub
- A particular hydrogen - like ion emits the... | Physics | TestHub
- Radius of a certain orbit of hydrogen atom... | Physics | TestHub
- The minimum energy required by a hydrogen... | Physics | TestHub
- Hydrogen atom is bombarded with electrons... | Physics | TestHub
- According to Bohr's theory, the moment of... | Physics | TestHub
- The ratio of the shortest wavelength of Ba... | Physics | TestHub
- The longest wavelength associated with Pas... | Physics | TestHub
- A particle of mass is moving in a circular... | Physics | TestHub
- A hydrogen atom changes its state from to... | Physics | TestHub
- A hydrogen atom in ground state is given a... | Physics | TestHub
- The shortest wavelength of the spectral li... | Physics | TestHub
- In a hydrogen like ion, the energy differe... | Physics | TestHub
- An electron in the hydrogen atom initially... | Physics | TestHub
- Given below are two statements : one is la... | Physics | TestHub
- Arrange the following in the ascending ord... | Physics | TestHub
- A hydrogen atom, initially at rest in its... | Physics | TestHub
- Assuming the validity of Bohr's atomic mod... | Physics | TestHub
- Considering Bohr's atomic model for hydrog... | Physics | TestHub
- During the transition of electron from sta... | Physics | TestHub
- The number of spectral lines emitted by at... | Physics | TestHub
- Considering the Bohr model of hydrogen lik... | Physics | TestHub
- An electron projected perpendicular to a u... | Physics | TestHub
- Given below are two statements: one is lab... | Physics | TestHub
- The frequency of revolution of the electro... | Physics | TestHub
- For a hydrogen atom, the ratio of the larg... | Physics | TestHub
- Consider an electron in the orbit of a hyd... | Physics | TestHub
- At room temperature, when white light is p... | Physics | TestHub
- Find the mass ratio M_{D} / M_{H} of deute... | Physics | TestHub
- Ionisation potential of the hydrogen atom... | Physics | TestHub
- Energy levels A, B and C of a certain atom... | Physics | TestHub
- The figure shows four curves showing the v... | Physics | TestHub
- The binding energy of a H-atom, considerin... | Physics | TestHub
- The angular momentum of an electron in the... | Physics | TestHub
- Suppose the electron in a hydrogen atom ma... | Physics | TestHub
- The ratio of electrostatic potential energ... | Physics | TestHub
- Which of the following represent the veloc... | Physics | TestHub
- In the Bohr model of the atom, if a, b and... | Physics | TestHub
- A hydrogen atom emits blue light when it c... | Physics | TestHub
- If elements with principal quantum number... | Physics | TestHub
- Which of the following curves may represen... | Physics | TestHub
- Which of the following parameters are the... | Physics | TestHub
- The energy level diagram of a hypothetical... | Physics | TestHub
- A hydrogen atom and a \mathrm{Li}^{++} ion... | Physics | TestHub
- The ionization potential of hydrogen is 13... | Physics | TestHub
- Consider the radiation emitted by large nu... | Physics | TestHub
- The lowest energy that a hydrogen like ato... | Physics | TestHub
- A sample of hydrogen atom is made to reson... | Physics | TestHub
- An orbital electron in the ground state of... | Physics | TestHub
- According to Bohr's theory, the ratio of t... | Physics | TestHub
- If the potential energy is taken zero at g... | Physics | TestHub
- If a singly ionized helium atom in an \mat... | Physics | TestHub
- Find the ratio between centripetal acceler... | Physics | TestHub
- In which of the following systems will the... | Physics | TestHub
- The magnitude of angular momentum, kinetic... | Physics | TestHub
- A force of attraction between the positive... | Physics | TestHub
- When the hydrogen atom gets to its lowest... | Physics | TestHub
- The total energy of an electron in the exc... | Physics | TestHub
- As one considers orbits with higher values... | Physics | TestHub
- A single electron orbits a stationary nucl... | Physics | TestHub
- Which of the following statement is correc... | Physics | TestHub
- The ionization energy of 10 times ionized... | Physics | TestHub
- In the spectrum of hydrogen, what is the r... | Physics | TestHub
- An electron of mass m_{e} and charge -e(e>... | Physics | TestHub
- An electron of kinetic energy 10 eV collid... | Physics | TestHub
- When light from a hydrogen discharge tube... | Physics | TestHub
- A hydrogen atom in ground state absorbs a... | Physics | TestHub
- Three ions \mathrm{H}^{+}, \mathrm{He}^{+}... | Physics | TestHub
- When white light is passed through hydroge... | Physics | TestHub
- An electron orbiting around the nucleus of... | Physics | TestHub
- Suppose the potential energy between elect... | Physics | TestHub
- A hydrogen atom undergoes the transition \... | Physics | TestHub
- An electron in a hydrogen atom first jumps... | Physics | TestHub
- The radius of the shortest orbit in a one-... | Physics | TestHub
- The product of the speed of the electron i... | Physics | TestHub
- Assume that He obeys the Bohr theory exact... | Physics | TestHub
- Hydrogen gas is excited with atoms up to t... | Physics | TestHub
- The hydrogen gas is bombarded with electro... | Physics | TestHub
- For the hydrogen like atom, the energy of... | Physics | TestHub
- A hydrogen atom in its ground state absorb... | Physics | TestHub
- When in a hydrogen atom an electron makes... | Physics | TestHub
- Hydrogen-like gas atoms absorb radiation o... | Physics | TestHub
- A hydrogen like atom has one electron revo... | Physics | TestHub
- In a hydrogen like atom, energy required t... | Physics | TestHub
- When the electron in a hydrogen atom jumps... | Physics | TestHub
- Hydrogen atoms are excited to n = 4 state.... | Physics | TestHub
- If the electron in a hydrogen atom jumps f... | Physics | TestHub
- Of the various wavelengths emitted from a... | Physics | TestHub
- Select the correct option(s): | Physics | TestHub
- A sample of atoms ALLENALIUM are in all th... | Physics | TestHub
- Three photons coming from excited atomic h... | Physics | TestHub
- In Bohr's model of hydrogen-like species,... | Physics | TestHub
- A photon of energy 10.2 eV corresponds to... | Physics | TestHub
- In the Bohr's model, let \mathrm{r}= radiu... | Physics | TestHub
- At some place in universe an atom consists... | Physics | TestHub
- When a stationary excited hydrogen atom of... | Physics | TestHub
- An alpha particle's trajectory is deflecte... | Physics | TestHub
- Of the following transitions in hydrogen a... | Physics | TestHub
- The energy required to excite the electron... | Physics | TestHub
- If photons emitted from allenalium transit... | Physics | TestHub
- An electron is excited from a lower energy... | Physics | TestHub
- The time period of the electron in the gro... | Physics | TestHub
- A moving hydrogen atom emits a photon perp... | Physics | TestHub
- If the electron of the hydrogen atom is re... | Physics | TestHub
- The magnitude of angular momentum, orbit r... | Physics | TestHub
- In a hydrogen atom, the ratio of the wavel... | Physics | TestHub
- A spectral line results from the transitio... | Physics | TestHub
- The longest wavelength of photon in the Ba... | Physics | TestHub
- If in the first orbit of a hydrogen atom t... | Physics | TestHub
- Let \nu_{1} be the frequency of the series... | Physics | TestHub
- The angular momentum of an electron in the... | Physics | TestHub
- In hydrogen atom, electron excites from gr... | Physics | TestHub
- In which of the following systems will the... | Physics | TestHub
- Hydrogen atoms are excited to n=4 state. I... | Physics | TestHub
- An \alpha -particle and a free electron, b... | Physics | TestHub
- A stationary nucleus of mass 25 u emits a... | Physics | TestHub
- If R is the Rydberg's constant, the energy... | Physics | TestHub
- A photon is emitted from a hydrogen atom d... | Physics | TestHub
- A hydrogen atom is excited up to the 9th l... | Physics | TestHub
- The ratio of the longest and shortest wave... | Physics | TestHub
- The transition from the state n = 4 to n =... | Physics | TestHub
- The energy of an electron in an excited hy... | Physics | TestHub
- An electron in a hydrogen atom makes a tra... | Physics | TestHub
- A neutron (relative atomic mass 1) is in h... | Physics | TestHub
- If the radius of Bohr's second orbit of th... | Physics | TestHub
- A negative charge is revolving around a fi... | Physics | TestHub
- Electrons having de-Broglie wavelength \la... | Physics | TestHub
- Among the following possible transitions i... | Physics | TestHub
- Find the quantum number n corresponding to... | Physics | TestHub
- In the Bohr model of the hydrogen atom, th... | Physics | TestHub
- A monochromatic radiation is absorbed by h... | Physics | TestHub
- An electron moving with a kinetic energy =... | Physics | TestHub
- A cloud chamber is a device which makes th... | Physics | TestHub
- Hydrogen atoms in the ground state are exc... | Physics | TestHub
- Choose the CORRECT option(s) : | Physics | TestHub
- The ground-state energy of positronium is... | Physics | TestHub
- What is the dimensional formula for Rydber... | Physics | TestHub
- Let the radius of ground state H-atom (as... | Physics | TestHub
- The ratio of electron wavelengths for the... | Physics | TestHub
- Whenever a photon is emitted by a hydrogen... | Physics | TestHub
- The ratio of magnetic moment to the angula... | Physics | TestHub
- When a stationary hydrogen atom emits a ph... | Physics | TestHub
- The energies of four levels of the hydroge... | Physics | TestHub
- Suppose the frequency of the emitted photo... | Physics | TestHub
- Which of the following statements is (are)... | Physics | TestHub
- Which of the following products in a hydro... | Physics | TestHub
- Which one of the following curve may repre... | Physics | TestHub
- In a muonic hydrogen atom, the electron is... | Physics | TestHub
- If the electron in a hydrogen atom jumps f... | Physics | TestHub
- The figure shows a graph between \ln \left... | Physics | TestHub
- A stationary hydrogen atom of mass M emits... | Physics | TestHub
- The radius of the hydrogen atom in its gro... | Physics | TestHub
- In Bohr model of the hydrogen atom, let R,... | Physics | TestHub
- Which one of the following curve may repre... | Physics | TestHub
- The wavelength of first Lyman series will... | Physics | TestHub
- \mathrm{A} \mathrm{He}^{+} ion in ground s... | Physics | TestHub
De Broglie & Matter Waves(115)
- Given below are two statements:Assertion (... | Physics | TestHub
- Consider an electron in the n=4 orbit of a... | Physics | TestHub
- Formation of covalent bonds in compounds e... | Physics | TestHub
- If the kinetic energy of a free electron d... | Physics | TestHub
- The time by a photoelectron to come out af... | Physics | TestHub
- Photon of frequency has a momentum associa... | Physics | TestHub
- An -particle and a proton are accelerated... | Physics | TestHub
- A proton is fired from very far away towar... | Physics | TestHub
- Electrons are accelerated through a potent... | Physics | TestHub
- For LED's to emit light in visible region... | Physics | TestHub
- For which of the following particles will... | Physics | TestHub
- A parallel beam of electrons travelling in... | Physics | TestHub
- The de-Broglie wavelength associated with... | Physics | TestHub
- De-Broglie wavelength of an electron accel... | Physics | TestHub
- An electron in an excited state ofion has... | Physics | TestHub
- A particleof massand initial velocitycolli... | Physics | TestHub
- A photoelectric material having work-funct... | Physics | TestHub
- If the de Broglie wavelengths associated w... | Physics | TestHub
- Two electrons are moving with non-relativi... | Physics | TestHub
- The de-Broglie wavelengthassociated with t... | Physics | TestHub
- A particleof massand chargeis accelerated... | Physics | TestHub
- Two particles move at right angle to each... | Physics | TestHub
- In an electron microscope, the resolution... | Physics | TestHub
- A particleis formed due to a completely in... | Physics | TestHub
- If the deBroglie wavelength of an electron... | Physics | TestHub
- Consider an electron in a hydrogen atom, r... | Physics | TestHub
- A nucleuswith a finite de-broglie waveleng... | Physics | TestHub
- An electron of massand magnitude of charge... | Physics | TestHub
- Assuming the nitrogen molecule is moving w... | Physics | TestHub
- An electron (mass) with initial velocityis... | Physics | TestHub
- An electron, a doubly ionized helium ion (... | Physics | TestHub
- An electron (of mass) and a photon have th... | Physics | TestHub
- Particleof massmoving along the-axis with... | Physics | TestHub
- When photon of energystrikes the surface o... | Physics | TestHub
- A particle is movingtimes as fast as an el... | Physics | TestHub
- A particle moving with kinetic energyhas d... | Physics | TestHub
- An electron having de-Broglie wavelengthis... | Physics | TestHub
- The temperature of an ideal gas in three d... | Physics | TestHub
- An electron of massand a proton of massare... | Physics | TestHub
- What should be the order of arrangement of... | Physics | TestHub
- A moving proton and electron have the same... | Physics | TestHub
- The de Broglie wavelength of a proton and-... | Physics | TestHub
- An electron of massand a photon have same... | Physics | TestHub
- A particle of massat rest disintegrates in... | Physics | TestHub
- The de-Broglie wavelength of a particle ha... | Physics | TestHub
- Anparticle and a proton are accelerated fr... | Physics | TestHub
- A particle is travellingtimes as fast as a... | Physics | TestHub
- An electron moving with speedand a photon... | Physics | TestHub
- The de-Broglie wavelength associated with... | Physics | TestHub
- An electron of massand a proton of massare... | Physics | TestHub
- A particle of masstravels in a medium with... | Physics | TestHub
- Consider two separate ideal gases of elect... | Physics | TestHub
- A proton, a neutron, an electron and an-pa... | Physics | TestHub
- Anparticle and a proton are accelerated fr... | Physics | TestHub
- Anparticle and a carbonatom has same kinet... | Physics | TestHub
- A nucleus of massat rest splits into two p... | Physics | TestHub
- The ratio of wavelengths of proton and deu... | Physics | TestHub
- An electron with speed and a photon with s... | Physics | TestHub
- The de Broglie wavelengths for an electron... | Physics | TestHub
- The kinetic energy of emitted electron isw... | Physics | TestHub
- An electron (mass) with an initial velocit... | Physics | TestHub
- The equationcan be used to find the de-Bro... | Physics | TestHub
- Given below are two statements: One is lab... | Physics | TestHub
- A proton and an -particle are accelerated... | Physics | TestHub
- Electron beam used in an electron microsco... | Physics | TestHub
- Protonand electronwill have same de-Brogli... | Physics | TestHub
- Anparticle, a proton and an electron have... | Physics | TestHub
- The ratio of de-Broglie wavelength of an-p... | Physics | TestHub
- An electron accelerated through a potentia... | Physics | TestHub
- The de Broglie wavelength of a molecule in... | Physics | TestHub
- The ratio of the de-Broglie wavelengths of... | Physics | TestHub
- The de Broglie wavelength of an electron h... | Physics | TestHub
- A proton moving with one tenth of velocity... | Physics | TestHub
- The kinetic energy of an electron, particl... | Physics | TestHub
- The de Broglie wavelengths of a proton and... | Physics | TestHub
- A proton and an electron are associated wi... | Physics | TestHub
- A proton and an electron have the same de... | Physics | TestHub
- The de-Broglie wavelength of an electron i... | Physics | TestHub
- A proton, an electron and an alpha particl... | Physics | TestHub
- The energy and momentum of a moving body o... | Physics | TestHub
- An electron with mass ' ' with an initial... | Physics | TestHub
- An electron of mass ' m ' with an initial... | Physics | TestHub
- An electron in the ground state of the hyd... | Physics | TestHub
- A proton of mass ' ' has same energy as th... | Physics | TestHub
- A sub-atomic particle of mass is moving wi... | Physics | TestHub
- An electron is released from rest near an... | Physics | TestHub
- Consider an electron in the nth orbit of a... | Physics | TestHub
- What is the de Broglie wavelength of the \... | Physics | TestHub
- An electron in the ground state of the hyd... | Physics | TestHub
- The ratio of the de Broglie wavelength of... | Physics | TestHub
- A beam of 5 keV \alpha -particles and a be... | Physics | TestHub
- An electron (mass m) with an initial veloc... | Physics | TestHub
- A homogeneous ball (mass = m) of ideally b... | Physics | TestHub
- A particle of mass 4 m at rest decays into... | Physics | TestHub
- A particle of mass M at rest decays into t... | Physics | TestHub
- Two particles of equal masses are moving w... | Physics | TestHub
- The figure shows the electronic wave funct... | Physics | TestHub
- When electron accelerated through the 150... | Physics | TestHub
- Find the wavelength of the Kα line in copp... | Physics | TestHub
- An electron of mass m, when accelerated th... | Physics | TestHub
- In a cricket match, batsman hit the ball (... | Physics | TestHub
- Two particles with same mass, moving at 60... | Physics | TestHub
- A non-relativistic particle X is moving 2.... | Physics | TestHub
- An electron is in an excited state in a hy... | Physics | TestHub
- A proton and \alpha particle have equal ki... | Physics | TestHub
- A photon, an electron and a uranium nucleu... | Physics | TestHub
- The wavelength of an electron accelerated... | Physics | TestHub
- If and are de Broglie wavelength and kinet... | Physics | TestHub
- The magnitude of the de Broglie wavelength... | Physics | TestHub
- Helium { }_{2}^{4} \mathrm{He} becomes a s... | Physics | TestHub
- A deuteron of mass M moving at speed v col... | Physics | TestHub
- A proton and an alpha particle are acceler... | Physics | TestHub
- An electron and a proton are accelerated t... | Physics | TestHub
- A particle of de Broglie wavelength 2.21 \... | Physics | TestHub
- A particle moves in a closed orbit around... | Physics | TestHub
Miscellaneous(7)
- A point source of light of power ' P ' and... | Physics | TestHub
- Match each functional dependence of energy... | Physics | TestHub
- A particle of masscollides with a hydrogen... | Physics | TestHub
- An oil drop of the radiuswith a densityis... | Physics | TestHub
- List-I shows various functional dependenci... | Physics | TestHub
- Match the column | Physics | TestHub
- Radiation from hydrogen gas excited to fir... | Physics | TestHub
Nuclear physics(109)
- A uranium nucleus { }^{235} \mathrm{U} lib... | | TestHub
- A nucleus disintegrates into two nuclear p... | Physics | TestHub
- Neon-23 undergoes beta decay in the follow... | Physics | TestHub
- Given below are two statements:Assertion (... | Physics | TestHub
- If mass-energy equivalence is taken into a... | Physics | TestHub
- A nucleus with emits the following in a se... | Physics | TestHub
- When a nucleus originally at rest, decays... | Physics | TestHub
- In the nuclear fusion reaction given that... | Physics | TestHub
- A nucleus disintegrates into two nuclear p... | Physics | TestHub
- The binding energy per nucleon of deuteron... | Physics | TestHub
- A nuclear transformation is denoted by . W... | Physics | TestHub
- If radius of nucleus is estimated to be Fe... | Physics | TestHub
- If the binding energy per nucleon in and n... | Physics | TestHub
- When nuclei are bombarded by protons, and... | Physics | TestHub
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- Which of the following Statements is correct? | Physics | TestHub
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- Assume that a neutron breaks into a proton... | Physics | TestHub
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- When Uranium is bombarded with neutrons, i... | Physics | TestHub
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- Given the masses of various atomic particl... | Physics | TestHub
- You are given thatMass of Mass ofand Mass... | Physics | TestHub
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- Consider the following statements:. Atoms... | Physics | TestHub
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- The decay of a proton to neutron is : | Physics | TestHub
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- A nucleus with mass numberinitially at res... | Physics | TestHub
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- The binding energy of nucleons in a nucleu... | Physics | TestHub
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- Two lighter nuclei combine to form a compa... | Physics | TestHub
- The-value of a nuclear reaction and kineti... | Physics | TestHub
- In the following nuclear reaction,Mass num... | Physics | TestHub
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- A nucleus with mass numberand binding ener... | Physics | TestHub
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- The ratio of the density of oxygen nucleus... | Physics | TestHub
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- If three helium nuclei combine to form a c... | Physics | TestHub
- The energy equivalent of of substance is : | Physics | TestHub
- The disintegration energy for the nuclear... | Physics | TestHub
- A nucleus at rest disintegrates into two s... | Physics | TestHub
- A nucleus has mass numberand volume. Anoth... | Physics | TestHub
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- If is the mass of isotope and are the mass... | Physics | TestHub
- Which of the following nuclear fragments c... | Physics | TestHub
- From the statements given below :(A) The a... | Physics | TestHub
- Binding energy of a certain nucleus is . H... | Physics | TestHub
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- The value of K_{2} is ______ | Physics | TestHub
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- The value of \mathrm{K}_{1} is \_\_\_\_ | Physics | TestHub
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- Energy released in fission of single { }_{... | Physics | TestHub
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- Problem:The positions of , and are shown o... | Physics | TestHub
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Photoelectric effect(153)
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- The work function of a substance is . Then... | Physics | TestHub
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- A pulse of light of duration 100 ns is abs... | Physics | TestHub
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- In a historical experiment to determine Pl... | Physics | TestHub
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- In a photoelectric experiment, a parallel... | Physics | TestHub
- A metal plate of areais illuminated by a r... | Physics | TestHub
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- A photo-emissive substance is illuminated... | Physics | TestHub
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- Photons of wavelength 248 nm fall on a met... | Physics | TestHub
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Radioactivity(28)
- Given below are two statements:Assertion (... | Physics | TestHub
- Match the following columns | Physics | TestHub
- Half-life of a radio active substance ' '... | Physics | TestHub
- A radioactive sample having an activity of... | Physics | TestHub
- To determine the half-life of a radioactiv... | Physics | TestHub
- The activity of a freshly prepared radioac... | Physics | TestHub
- A freshly prepared sample of a radioisotop... | Physics | TestHub
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- A nuclear power plant supplying electrical... | Physics | TestHub
- An accident in a nuclear laboratory result... | Physics | TestHub
- an isotope of Iodine thatdecays to an isot... | Physics | TestHub
- In a radioactive sample, nuclei either dec... | Physics | TestHub
- A heavy nucleusof half-lifeminutes undergo... | Physics | TestHub
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- List- shows different radioactive decay pr... | Physics | TestHub
- A radioactive material P first decays into... | Physics | TestHub
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- If 20 gm of a radioactive substance due to... | Physics | TestHub
- A radioactive element of mass number 208 a... | Physics | TestHub
- A radio-active element is produced at a ra... | Physics | TestHub
- A sample of radioactive material A , that... | Physics | TestHub
- Nuclei A decays to B with decay constant \... | Physics | TestHub
- A decay process involving three radio-acti... | Physics | TestHub
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- In a sample of { }_{86}^{211} \mathrm{Rn}... | Physics | TestHub
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X-rays(25)
- In an X-ray tube the accelerating voltage... | | TestHub
- In an X-ray tube, electrons emitted from a... | Physics | TestHub
- Statement I If the accelerating potential... | Physics | TestHub
- Electrons with de-Broglie wavelength fall... | Physics | TestHub
- Which one of the following statement is WR... | Physics | TestHub
- Ifis the wavelength ofX-ray line of copper... | Physics | TestHub
- A fission reaction is given by, whereandar... | Physics | TestHub
- An electron beam is accelerated by a poten... | Physics | TestHub
- Two sources of light emit X-rays of wavele... | Physics | TestHub
- In an-ray tube, electrons emitted from a f... | Physics | TestHub
- The correct match between the entries in c... | Physics | TestHub
- An X-ray tube is operated atmillion volt.... | Physics | TestHub
- The wavelength of an X-ray beam is. The ma... | Physics | TestHub
- Match List I and List II List I List IIAMi... | Physics | TestHub
- The waves emitted when a metal target is b... | Physics | TestHub
- A metal target with atomic number is bomba... | Physics | TestHub
- When voltage of an X-ray tube is changed f... | Physics | TestHub
- Consider a metal used to produce some char... | Physics | TestHub
- The wavelength of characteristic \mathrm{K... | Physics | TestHub
- The wavelength λ of the Kα X-ray line from... | Physics | TestHub
- In an X-ray tube, the intensity of the emi... | Physics | TestHub
- The \mathrm{K}_{\alpha} X-ray emission lin... | Physics | TestHub
- The target of an x-ray tube is a metallic... | Physics | TestHub
- Statement-1: Cut off wavelength of X-ray c... | Physics | TestHub
- X-ray are incident normally on a crystal o... | Physics | TestHub
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