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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

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Only the block is heated

Both block and pin are heated together

Both block and pin are cooled together

Only the pin is cooled

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detailed solution

Correct option 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 and the change in temperature required is minimum

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Similar Questions

A vessel having coefficient of cubical expansion $γ_{g}$ contains liquid Of coefficient of real expansion r_R up to certain level. When Vessel
Is heated, match column I and column II.

	Column - I		Column - II
a	$γ_{g} < γ_{R}$	p	liquid level rises continuously from beginning
b	$γ_{g} = γ_{R}$	q	liquid level falls continuously from beginning
c	$γ_{g} > γ_{R}$	r	liquid level remains same
d	$γ_{g} = 0$	s	liquid level first falls and then rises