Two holes of unequal diameters $d_{1} and d_{2}$ $(d_{1} > d_{2}) d_{2}$ are cut in metal sheet. If the sheet is heated then.....

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both $d_{1} and d_{2}$ will increase

both $d_{1} and d_{2}$ will decrease

d₁ will increase, d₂ will decrease

d₁ will decrease d₂will increase

answer is B.

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Detailed Solution

If the sheet is heated then both $d_{1} and d_{2}$ will increase since the thermal expansion of isotropic solid is similar to true photographic enlargement. That is the holes will expand just like metal plates.

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