8 Sound signal is sent through a composite tube The radius of the semicircle is r speed of sound in - Physics - Electromagnetic Waves

Question

8 Sound signal is sent through a composite tube The radius of the
semicircle is r speed of sound in air is V The source of sound is
capable to generate frequencies in the range f1 to f29f2f1) if 'n'
is an integer then frequency for maximum intensity is given by---

Zafar · Accepted Answer

This problem is based on the
interference of wave
The path difference between the waves moving along the straight
path and semicircular path of composite tube
∆x =πr -2r =(π-2)r
for maxima this path difference be n λ
⇒ (π-2)r = nλ                        λ =vf  ⇒(π-2)r = nvf                Frequency  for maximum intensity                       f= nv(π-2)r

8.Sound signal is sent through a composite tube.The radius of the semicircle is r.speed of sound in air is V.The source of sound is capable to generate frequencies in the range f1 to f29f2f1).if 'n' is an integer then frequency for maximum intensity is given by---