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Two identical charged particles enter a ...

Two identical charged particles enter a uniform magnetic field with same speed but at angles `30^(@)` and `60^(@)` with field Let a,b and c be the ratio of their time periods, radii and pitches of the helical paths than .

A

`abc=1`

B

`abcgt1`

C

`abclt1`

D

`a=bc`

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The correct Answer is:
a,d
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