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Physics · 2013
JEE Main 2013 · 2013-04-07 Offline · Q46
A sonometer wire of length 1.5 m is made of steel. The tension in it produces an elastic strain of 1%. What is the fundamental frequency of steel if…
A sonometer wire of length $\displaystyle 1.5$ m is made of steel. The tension in it produces an elastic strain of $\displaystyle 1$%. What is the fundamental frequency of steel if density and elasticity of steel are $\displaystyle 7.7 \times 10^3 \mathrm{~kg} / \mathrm{m}^3$ and $\displaystyle 2.2 \times 10^{11} \mathrm{~N} / \mathrm{m}^2$ respectively ?
Official answer
(3)
178.$\displaystyle 2$ Hz
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JEE Main 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.