JEE Main 2013 — Waves and Sound Question with Solution
JEE Main 2013 (09 Apr Online)
Question
When two sound waves travel in the same direction in a medium, the displacements of a particle located at ' ' at time ' ' is given by :
$\begin{aligned}
& y_1=0.05 \cos (0.50 \pi x-100 \pi t) \\
& y_2=0.05 \cos (0.46 \pi x-92 \pi t)
\end{aligned}$
where and are in meters and in seconds.
The speed of sound in the medium is :
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
Standard equation
From any of the displacement equation
Say
and
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Waves and Sound chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2013, 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.