Duration: 6:44

12 views

0

A source, approaching with speed \( u \) towards the open end of a stationary pipe of length \( L \), is emitting a sound
\( \mathrm{P} \)
The speed of sound in air is \( v \) and \( f_{0} \) is the fundamental frequency of the pipe. For which of the following combination(s) of \( u \) and \( f_{\mathrm{s}} \), will the sound reaching the pipe lead to a resonance?
[JEE Advanced-2021]
(a) \( u=0.8 v \) and \( f_{\mathrm{s}}=f_{0} \)
(b) \( u=0.8 v \) and \( f_{\mathrm{s}}=2 f_{0} \)
(c) \( u=0.8 v \) and \( f_{\mathrm{s}}=0.5 f_{0}(d) \quad u=0.5 v \) and \( f_{\mathrm{s}}=1.5 f_{0} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live