Question Number: #Phy1402

A wire of length L, radius r, when stretched with a force F, changes in length l. what will be the change in length in a wire of  same material having length 2 L, radius 2 r and stretched by a force of 2 F

A.) I/2
B.) 2l
C.) 3l
D.) 4l

Answer is option : B

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