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Q.

There is a simple pendulum hanging from the ceiling of a lift. When the lift is stand still, the time period of the pendulum is T. If the resultant acceleration becomes g/4,then the new time period of the pendulum is

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a

0.8 T

b

0.25 T

c

2 T

d

4 T

answer is C.

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Detailed Solution

T∝1g⇒T2T1=g1g2=gg/4⇒T2=2T1=2T
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