JEE Main 2025 — Waves and Sound Question with Solution
JEE Main 2025 (23 Jan Shift 2)
Question
The equation of a transverse wave travelling along a string is , where is in mm and is in second. The velocity of the wave is :
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
$\begin{aligned}
& k=20 \times 10^{-3} \mathrm{~mm}^{-1}=20 \mathrm{~m}^{-1} \\
& w=600 \mathrm{~s}^{-1} \\
& v=\frac{W}{k}=\frac{600}{20}=30 \mathrm{~m} / \mathrm{s}
\end{aligned}$
and carry same sign
Therefore
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This is a previous-year question from JEE Main 2025, covering the Waves and Sound chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.