JEE Main 2018 — Waves and Sound Question with Solution
JEE Main 2018 (16 Apr Online)
Question
Two sitar strings, and playing the note '' are slightly out of tune and produce beats of frequency . The tension of the string is slightly increased and the beat frequency is found to decrease by . If the frequency of is . The original frequency of is
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
The frequency of is either or 430 Hz. As, the tension in is increased its frequency will increase. If the frequency is , the beat frequency will increase. If the frequency is beat frequency will decrease, hence the correct answer is
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 2018, 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.