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A brass disc fits in a hole in a steel p...

A brass disc fits in a hole in a steel plate. Would you heat or cool the system to loosen the disc form the hole? Assume that `alpha_(s) lt alpha_(b)`.

A

First heated in cooled

B

First cooled then heated

C

Is heated

D

Is cooled

Text Solution

Verified by Experts

The correct Answer is:
D
Coefficient of linear expansion of brass is greater than of steel `1`.
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ALLEN-GEOMETRICAL OPTICS-EXERCISE -01
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  12. The coefficient of apparent expansion of a liquid when determined usin...

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  13. Three rods of the same dimensions have thermal conductivities 3k , 2k ...

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  14. A cup of tea cools from 80^(@)C" to "60^(@)C in 40 seconds. The ambien...

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  15. Ice starts forming in a lake where the water is at 0^(@)C and the ambi...

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  16. There is a small hole in a container. At what temperature should it be...

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