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The period of oscillations of a magnet i...

The period of oscillations of a magnet is 2 sec. When it is remagnetised so that the pole strength is 4 times its period will be

A

4 sec

B

2 sec

C

1 sec

D

1/2 sec

Text Solution

Verified by Experts

The correct Answer is:
C
`T prop (1)/(sqrtM) rArr T prop (1)/(sqrt(q_(m))) rArr (T)/(T.)= (sqrt(4q_(m)))/(sqrt(q_(m)))`
`therefore T.=1` sec
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