Q.

The ratio of Young's modulus of the material of two wires is 2 : 3. If the same stress is applied on both, then the ratio of elastic energy per unit volume will be

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a

3:2

b

4:3

c

2:3

d

3:4

answer is A.

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Detailed Solution

Energy stored per unit volume =( Stress )22Y

E1E2=Y2Y1( Stress is constant )E1E2=32

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The ratio of Young's modulus of the material of two wires is 2 : 3. If the same stress is applied on both, then the ratio of elastic energy per unit volume will be