Question:
A sonometer wire of length $1.5 \mathrm{~m}$ is made of steel. The tension in it produces an elastic strain of $1 \%$. What is the fundamental frequency of steel if density and elasticity of steel are $7.7 \times 10^{3} \mathrm{~kg} / \mathrm{m}^{3}$ and $2.2 \times 10^{11} \mathrm{~N} / \mathrm{m}^{2}$ respectively ?
Correct Option: 2,
Solution:
