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A proton is moving with a uniform veloci...

A proton is moving with a uniform velocity of `10^(6) ms^(-1)` along the Y-axis, under the joint action of a magentic field along Z-axis and an electric field of magnitude `2xx10^(4)Vm^(-1)` along the negative X-axis if the electric field as switched off. the proton starsts movinv in a circle. The radius of the circle is nearly (given `(e)/(m)` ratio for proton `=10^(8)Ckg^(-1))`

A

`0.5m`

B

`0.2m`

C

`0.1m`

D

`0.05m`

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A proton is moving with a uniform velocity of 10^(6)m.s^(-1) along the Y-axis, under the joint action of a magnetic field along Z-axis and an electric field of magnitude 2xx10^(4)V.m^(-1) along the negative X-axis. If the electric field is switched off, the proton starts moving in a circle. The radius of the circle is nearly (given: (e)/(m) ratio for proton ~~10^(8)C.kg^(-1) )

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