A brass disc fits simply in a hole of a steel plate. disc from hole can be loosened if system

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10-1.Thermometry, Thermal Expansion and Calorimetry

easy

A brass disc fits simply in a hole of a steel plate. The disc from the hole can be loosened if the system

A

First heated then cooled

B

First cooled then heated

C

Is heated

D

Is cooled

Solution

(d) Since, the coefficient of linear expansion of brass is greater than that of steel. On cooling, the brass contracts more, so, it get loosened.

Standard 11

Physics

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