A Second's pendulum gains 2 minutes a day. To make it to keep correct

1.	A Second's pendulum gains 2 minutes a day. To make it to keep correct time its length
A.	must be decreased
B.	must be increased
C.	is not changed but weight of the bob is increased
D.	is not changed but weight of the bob is decreased
Answer» C. is not changed but weight of the bob is increased

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A Second's pendulum gains 2 minutes a day. To make it to keep correct time its length

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