First slide

Elastic behaviour of solids

Question

The Young's modulus of a wire of length L and radius r is Y N/m². If the length and radius are reduced to L/2 and r/2, then its Young's modulus will be

Moderate

A

Y/2
B

Y
C

2Y
D

4Y

Solution

Young's modulus of wire does not varies with dimension of wire. It is the property of given material.

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