Questions
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
detailed solution
Correct option is D
ΔlI×100=αΔt×100=10−5×104=10−1=0.1%ΔAA×100=0.2%Talk to our academic expert!
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A thin copper wire of length L increases in length by 1% when heated from 0°C to 100°C . If a thin copper plate of area 2L2 is heated from 0oC to 50°C , the percentage increase in its area will be
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