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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 14th of its initial value

d

Become 4 times its initial value

answer is B.

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Detailed Solution

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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