At some temperature T, a bronze pin is a little large fit into a hole drilled in a steel block. The change in temperature required for an exact fit is minimum when (coefficient of linear expansion of bronze is grearter than that of steel)

At some temperature T, a bronze pin is a little large fit into a hole

1.	At some temperature T, a bronze pin is a little large fit into a hole drilled in a steel block. The change in temperature required for an exact fit is minimum when (coefficient of linear expansion of bronze is grearter than that of steel)
Answer» only the BLOCK is HEATED both block and PIN are heated together both block and pin are COOLED together only the pin is cooled Answer :D