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Q.

Young's modulus of the material of a wire of length L and radius r is Y Nm-2. If the length is reduced to L2 and radius to r2, the Young's modulus will be

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a

Y

b

2Y

c

Y4

d

Y2

answer is A.

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Detailed Solution

Young's modulus is the property of material. So, it is independent of the length.

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