Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismMotion analysis in electric & magnetic fieldEasy2 minPYQ_2020

PhysicsEasysingle choice

Mixed $H e^{+}$ and $O^{2 +}$ ions (mass of ${H e}^{+} = 4 a m u a n d t h a t o f O^{2 +} = 16 a m u$ )
beam passes a region of constant perpendicular magnetic field. If kinetic energy of all the ions is same, then

Options:

Answer:

Solution:

$E = \frac{1}{2} m v^{2}$

or $v = \sqrt{\frac{2 E}{m}}$

$q v B = \frac{m v^{2}}{r}$

or $r = \frac{m v}{q B} = \frac{m}{q B} \times \sqrt{\frac{2 E}{m}} = \frac{\sqrt{2 E m}}{q B}$

or $r \propto \frac{\sqrt{m}}{q}$

Hence,
$r_{1} = r_{2}$

Stream:JEESubject:PhysicsTopic:MagnetismSubtopic:Motion analysis in electric & magnetic field

⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...