Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsAtomic structureHard2 minPYQ_2018
PhysicsHardsingle choice

An electron from various excited states of hydrogen atom emit radiation to come to the ground state. Letλn, λgbe the de Broglie wavelength of the electron in thenthstate and the ground state respectively. Letnbe the wavelength of the emitted photon in the transition from thenthstate to the ground state. For large n, (A, B are constants)

Options:

Answer:
B
Solution:

2πr=nn

n=2πrn

r=ron2

n=2πn ron2=n2πro  ..i

1∧​n=R112-1n2

∧​n=1R1+1n2-1

∧​n=1R1+1n2  ..ii

from(i)and(ii)

∧​n=1R1+4n2ro2n2=A+Bn2

Stream:JEESubject:PhysicsTopic:Modern PhysicsSubtopic:Atomic structure
2mℹ️ Source: PYQ_2018

Doubts & Discussion

Loading discussions...