A sound consists of four frequencies → 300 Hz, 900 Hz, 2400 Hz and 4500 Hz. A sound ‘filter’ is made by passing this sound through a bifurcated pipe as shown. The sound waves have to travel a distance of 50 cm more in the right branch-pipe than in the straight pipe. The speed of sound in air is 300 m s⁻¹. Then, which of the following frequencies will be almost completely muffled or “silenced” at the outlet?
Physics · Wave Motion
A sound consists of four frequencies → 300 Hz, 900 Hz, 2400 Hz and 4500 Hz. A sound ‘filter’ is made by passing this sound through a bifurcated pipe as shown. The sound waves have to travel a distance of 50 cm more in the right branch-pipe than in the straight pipe. The speed of sound in air is 300 m s⁻¹. Then, which of the following frequencies will be almost completely muffled or “silenced” at the outlet?
Select all that apply