Question

If a uniform cylindrical copper rod is pulled from its ends to elongate its length by 20% keeping its volume constant, find the ratio of resistance of the original rod and that of the elongated rod.

Answer 1

Answer:

the ratio is 4:6 of the answer

Answer 2

$\huge\red{Answer}$

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see this pic ........

jai siya ram☺ __/\__

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