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A metallic sphere is filled with water a...

A metallic sphere is filled with water and hung by a long thread. It is made to oscillate. If there is a small hole in the bottom through which water slowly flows out, the time period will

A

go on increasing till the sphere is empty

B

go on decreasing till the sphere is empty

C

remain unchanged throughout

D

first increase, then it will decrease till the sphere is empty and the period will now be the same as when the sphere was full of water

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The correct Answer is:
D
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