The coefficient of linear expansion of a metal is 1 x 10-5/o C. The percentage increase in area of a square plate of that metal when it is heated through 100oC is

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0.02 %

0.1 %

0.001 %

0.2 %

answer is D.

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Detailed Solution

ΔlI×100=αΔt×100=10−5×104=10−1=0.1%ΔAA×100=0.2%

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