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Physics · 2016
JEE Main 2016 · 2016-04-03 Offline · Q11
A uniform string of length 20 m is suspended from a rigid support. A short wave pulse is introduced at its lowest end. It starts moving up the…
A uniform string of length $\displaystyle 20$ m is suspended from a rigid support. A short wave pulse is introduced at its lowest end. It starts moving up the string. The time taken to reach the support is :
$$\text { (take } g=10 \mathrm{~ms}^{-2} \text { ) }
$$
Official answer
(3)
$\displaystyle 2 \sqrt{2} \mathrm{~s}$
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JEE Main 2016 Physics question, with the answer from NTA’s final answer key. Where our answers come from.