JEE Main 2020PhysicsWaves and SoundEasyMCQ

JEE Main 2020Waves and Sound Question with Solution

JEE Main 2020 (05 Sep Shift 1)

Question

In a resonance tube experiment when the tube is filled with water up to a height of 17.0 cm, from bottom, it resonates with a given tuning fork. When the water level is raised the next resonance with the same tuning fork occurs at a height of 24.5 cm. If the velocity of sound in air is 330 m s-1, the tuning fork frequency is :

Choose an option

Show full solutionCorrect option: A
Correct answer
A2200 Hz

Step-by-step explanation

λ2=24.5-17=7.5 cm

f=Vλ

=330×10015=2200 Hz

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 2020, 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.