The Young’s modulus of a wire of length L and radius r is Y. If the length is reduced to \(\frac{\mathrm{L}}{2}\) and radius to \(\frac{\mathrm{r}}{2}\), its Young’s modulus will be …….
A. \(\frac{\mathrm{Y}}{2}\)
B. Y
C. 2Y
D. 4Y
Answer:B
The Young’s modulus of a wire of length L and radius r is Y. If the length is reduced to \(\frac{\mathrm{L}}{2}\) and radius to \(\frac{\mathrm{r}}{2}\), its Young’s modulus will be …….
A. \(\frac{\mathrm{Y}}{2}\) B. Y C. 2Y D. 4Y