Two holes of unequal diameters d1 and d2(d1>d2) are cut in a metal sheet. If the sheet is heated
A
Both and will decrease
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B
Both and will increase
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C
will increase, will decrease
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D
will decrease, will increase
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Solution
The correct option is B Both and 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.