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Question

Two holes of unequal diameters d1 and d2 (d1 > d2) are cut in a metal sheet. If the sheet is heated


A

Both d1 and d2 will decrease

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B

Both d1 and d2 will increase

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C

d1 will increase d2 will decrease

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D

d1 will decrease d2 will increase

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Solution

The correct option is B

Both d1 and d2 will increase


If the sheet is heated then both d1 and d2 will increase since the thermal expansion of isotropic solid is similar to true photographic enlargement.


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