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A beam of electrons is accelerated throu...

A beam of electrons is accelerated through a potential difference `V`. It is then passed normally through a uniform magnetic field where it moves in a circle of radius `r`. It would have moved in a circle of radius `2r` if it were initially accelarated through a potential difference

A

2V

B

4V

C

1V

D

3V

Text Solution

Verified by Experts

The correct Answer is:
B
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