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Electron of mass m and charge q is trave...

Electron of mass m and charge q is travelling with a speed v along a circular path of radius at right angles to a uniform magnetic field of intensity B. If the speed of the electron is doubled and the magnetic field is halved the resulting path would have a radius

A

4r

B

2r

C

`r/4`

D

`r/2`

Text Solution

Verified by Experts

The correct Answer is:
A
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