Elastic Behaviour of Solids – Young's Modulus

2020 1 question

1. 1 Mechanical Properties of Solids Easy
   A wire of length $L$, area of cross section $A$ is hanging from a fixed support. The length of the wire changes to $L_1$ when mass $M$ is suspended from its free end. The expression for Young's modulus is:
   A $\frac{Mg(L_1-L)}{AL}$ B $\frac{MgL}{AL_1}$ C $\frac{MgL}{A(L_1-L)}$ D $\frac{MgL_1}{AL}$
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