Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismMagnetic ForceMedium2 minPYQ_2021

PhysicsMediumsingle choice

Two ions having same mass have charges in the ratio $1 : 2$ . They are projected normally in a uniform magnetic field with their speeds in the ratio $2 : 3$ . The ratio of the radii of their circular trajectories is,

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Answer:

Solution:

$R = \frac{m v}{q B} \Rightarrow \frac{R_{1}}{R_{2}} = \frac{\frac{m v_{1}}{q_{1} B}}{\frac{m v_{2}}{q_{2} B}} = \frac{v_{1}}{q_{1}} \times \frac{q_{2}}{v_{2}} = \frac{q_{2}}{q_{1}} \times \frac{v_{1}}{v_{2}}$

$= \frac{2}{1} \times (\frac{2}{3}) = \frac{4}{3}$

Stream:JEESubject:PhysicsTopic:MagnetismSubtopic:Magnetic Force

⏱ 2mℹ️ Source: PYQ_2021

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