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An electron having kinetic energy K is m...

An electron having kinetic energy `K` is moving i a circular orbit of radius `R` perpendicular to a uniform magnetic induction. If kinetic energy is douled and magnetic induction tripled, the radius will become

A

`(2R)/3`

B

`sqrt2/3R`

C

`sqrt(2/3)R`

D

`2/sqrt3 R`

Text Solution

Verified by Experts

The correct Answer is:
B
`r=sqrt((2Km)/(Bq))implies rpropsqrtK/B`
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