MHT CET20243 May 2024Evening ShiftPhysicsWaves and SoundActual
If ' l ' is the length of 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 2(l+1 2 r )
- BV (l+1 2 r )
- CV (l+0 3 r )
- DV (l+0 6 r )
Correct answer
A. 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 ( e =0.6 r for open pipe ) & L =l+1.2 r aligned The fundamental frequency of open pipe is: f = v 2 ~L = v 2(l+1.2 r )