Physics, asked by angelpatel7081, 11 months ago

A metal rod of length l has variable linear coeiffiecient of expansion

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Answered by Anonymous
0
Change in length with temperature is L1*a*ΔT = L2-L1

if L1 = l, then L2 = 2L

L*a*ΔT = 2L-L

ΔT = 1/a

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