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At some temperature T, a bronze pin is a...

At some temperature T, a bronze pin is a little large to fit into a hole drilled in a steel block. The change in temperature required for an exact fit is minimum when

A

Only the block is heated

B

Both block and pin are heated together

C

Both block and pin are cooled together

D

Only the pin is cooled

Text Solution

Verified by Experts

The correct Answer is:
A
Since coefficient of expansion of steel is greater than that of bronze. Hence with small increase in its temperature the hole expand sufficiently.
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