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NEET UG

Practice

Elasticity

Interatomic Forces

Quick practice

Question 1 of 5

A wire of length L, area of cross section A is hanging from a fixed support. The length of the wire changes to \mathrm{L}_{1}  when mass M is suspended from its free end. The expression for Young’s modulus is :

A

\frac{M g\left(L_{1}-L\right)}{A L}

B

\frac{M g L}{A L_{1}}

C

\frac{M g L}{A\left(L_{1}-L\right)}

D

\frac{\mathrm{M} \mathrm{gL}_{1}}{\mathrm{AL}}

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