Question

A thin copper wire of length l metre increases inlength by 2% when heated through 10°C. What isthe percentage increase in area when a squarecopper sheet of length l metre is heated through10°C?(1) 4%(2) 8%(3) 16%(4) None of these​

Answer 1

Answer:

4%

Explanation:

in area square is ther so the anwer is 4%