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A metallic sphere of diameter D has a...

A metallic sphere of diameter D has a cavity of diameter d at its centre .If the sphere is heated , the diameter of the cavity will

A

decrease

B

increase

C

remain unchanged

D

decrease if `dlt(D)/(2)` and increase if `dgt(D)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
The diameter of cavity will increase
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