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

a
0.02%
b
0.1%
c
0.001%
d
0.2%

detailed solution

Correct option is D

b=2a,ΔAA100=bΔ100

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