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Q.

A copper sphere is dipped into water. Which of the following will be true?

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a

Buoyancy will be less at 0 0C than at 4 0C

b

Buoyancy will be more at 0 0C than at 4 0C

c

Buoyancy does not depend on temperature

d

No Buoyancy exist because of anomalous expansion of water

answer is A.

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Detailed Solution

Buoyancy is equal to the weight of the liquid displaced FB=ρwVgAs density of water is maximum at 4 0C, the Buoyancy is maximum at 4 0C.
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