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A charged particle is accelerated thrugh...

A charged particle is accelerated thrught a potential difference of 12 kV and acquires a speed of `1.0X10^6 ms^(-1).` It is then injected perpendiuclarly into a magnetic field of strenght 0.2 T. find the radius of the circle described by it.

A

2cm

B

4cm

C

8cm

D

12 cm

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The correct Answer is:
D
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