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Q.

A pendulum has time period T. If it is taken on to another planet having acceleration due to gravity half and mass 9 times that of the earth then its time period on the other planet will be

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a

T1/3

b

T

c

T

d

2T

answer is D.

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Detailed Solution

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T=2πlg⇒T∝1g⇒TPTe=gegP=21⇒T'=2T

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