Question

A thin copper wire of length 1m increases In length by 2% when heated through 10 Celsius what is the percentage increase in area when a square copper sheet is heated in 10 Celsius

Answer 1

Answer:

(1) Since percentage increase in length = 2 %

Hence, percentage increase in area of square sheet

= 2 × 2 %

= 2 × 2% = 4%.

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