MHT CET202314 May 2023Morning ShiftPhysicsWaves and SoundActual
If ' l ' is the length of the open pipe, ' r ' is the internal radius of the pipe and ' V ' is the velocity of sound in air then fundamental frequency of open pipe is
Options
- AV (l+0.3 r )
- BV (l+1.2 r )
- CV (l+0.6 r )
- DV 2(l+1.2 r )
Correct answer
D. V 2(l+1.2 r )
Step-by-step solution
For an open organ pipe, the length of the pipe with end correction is given as: aligned & L =l+2 e =l+2 0.6 r & L =l+1.2 r aligned The fundamental frequency of open pipe is: aligned & f = v 2 ~L & f = v 2(l+1.2 r ) aligned