An electron having kinetic energy T is m...

An electron having kinetic energy T is moving in a circular orbit of radius R prependicular to a uniform magnetic field induction `barB` . If kinetic energy is double and magentic field induction is triple, the radius will becomes :

`Rsqrt((9)/(4))`

`Rsqrt((3)/(2))`

`Rsqrt((2)/(9))`

`Rsqrt((4)/(3))`

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The correct Answer is:

`Rsqrt((2mk)/(qB))`

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