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Properties of Charges

An electron a...

Question

An electron and a proton equal momenta, enter a uniform magnetic filed at right angles to the field lines. What will be the ratio of the radii of an vature of three trajectories.

A

1 : 1

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B

1 : 2

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C

2 : 3

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D

3 : 4

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Solution

The correct option is A $1 : 1$
$\begin{matrix} A s r a d i u s o f c h e d p a r t i c l e i n m a g e n t i c f i l e d i s r = \frac{m v}{B q} t h e r a t i o o f t h e i r r a d i i i s 1. b e c u a s e q, m, v a n d B a r e e q u a l s o, a n s w e r i s 1 : 1 \end{matrix}$
Hence,
option $(A)$ is correct answer.

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