Question

Young's modulus of a wire of length L and radius r is $Y\left(N/m^2\right)$. If the length is reduced to $\frac{L}{2}$ and radius to $\frac{r}{2}$, its Young's modulus will be:

• A. $\frac{Y}{2}$
• B. Y
• C. 2Y
• D. 4Y

Answer 1

The correct option is B Y

Value of modulus of elasticity are independent of the magnitude of the stress and strain. It depend only on the nature of material of body.