JEE Main 2014 — Waves and Sound Question with Solution
JEE Main 2014 (12 Apr Online)
Question
A source of sound A emitting waves of frequency is falling towards ground with a terminal speed . The observer on the ground directly beneath the source receives waves of frequency . The source A receives waves, reflected from ground of frequency nearly: (Speed of sound )
Choose an option
Show full solutionCorrect option: B
Correct answer
B
Step-by-step explanation
Given
Reflected wave frequency received by , ?
Applying doppler's effect of sound,
Here,
Now, for the reflected wave,
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 2014, 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.