Yeah we are.
Can u post what exactly is the step that isn’t going right acc to you ?
I'm saying apparent wavelength received by Man B will be the same as that received by Man A
As for man B source is stationary to no other shift in wavelength
But B is in water. So that’s why it will be different
Source is inside water observer is inside water
Frequency remains same in air and water. Velocity is changing. So wavenlength will change
So why 5v-v/3
Which formula is this for apparent wavelength
When source moves we find the apparent wavelength.
When observer moves we find how many no of waves the observer intercepts in one second. For this we find relative velocity of sound.
But apparent wavelength doesn't change
Medium in this example is changing. Had there been no water then no change
Okay I accept medium is changing
So why not just
Now everything is known except lambda why include relative velocity
Gives u option B
Once u find this lambda that’s travelling in water. Find no of Waves intercepted per second. That will be frequency observed.
= 5v-v/3. / lambda
Phew got it