JEE Advanced 2021 Paper 2

Section: Physics

Question : 2 of 57

Marks: +1, -0

A source, approaching with speed u towards the open end of a stationary pipe of length L, is emitting a sound of frequency fs−. The farther end of the pipe is closed. The speed of sound in air is v and f0 is the fundamental frequency of the pipe. For which of the following combination(s) of u and fs, will the sound reaching the pipe lead to a resonance ?

[JEE Adv 2021 P2]

u=0.8v and fs=f0
u=0.8v and fs=2f0
u=0.8v and fs=0.5f0
u=0.5v and fs=1.5f0

Validate

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