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Q.

If the length of a wire is made double and radius is halved of its respective values. Then, the Young’s modulus of the material of the wire will :

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a

Become 8 times its initial value

b

Remain same

c

Become 4 times its initial value

d

Become 14th of its initial value

answer is B.

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Detailed Solution

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Young’s modulus of matter depends on material of wire and is independent of the dimensions of the wire. As the material remains same so Young’s modulus also remain same.

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