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Question

Two wires A and B have the same length and area of cross section. But Young’s modulus of A is two times the Young’s modulus of B. Then the ratio of force constant of A to that of B is

A
1
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B
2
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C
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D
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Solution

The correct option is B 2
Force constant of wire k=YALkAkB=YAYB=2 [As L and A are same]

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