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Two wires are made of the same material...

Two wires are made of the same material and have the same volume .The first wire has cross- sectional area A and the second wire has corss sectional area 3A If the length of the first wire is increased by `trianglel` on appluying a force F, how much force is needed to stretch the second wire by the same amount ?

A

6F

B

9F

C

F

D

4F

Text Solution

Verified by Experts

The correct Answer is:
B
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