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Three paticles, an electron (e), a proton (p) and a helium atom (He) are moving in circular paths with constant speeds in the x-y plane in a region where a uniform magnetic field B exists along z-axis. The times taken by e, p and He inside the field to complete one revolution are `t_e, t_p and t_He` respectively. Then,

A

`t_(He) gt t_(p)=t_(c )`

B

`t_(He) gt t_(p) gt t_(c )`

C

`t_(He) = t_(p) = t_(c )`

D

none of these

Text Solution

Verified by Experts

`T=2pim//qB`
`:. T_(He) gt t_(p) gt t_(e)`
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