Two loudspeaker `M` and `N` are located `20m` apart and emit sound at frequencies

Two speakers A and B , placed 1m apart, each produce sound waves of frequency 1800 Hz in phase. A detector moving parallel to line of speakers distant 2.4 m away detects a maximum intensity at ɵ and then at P . Speed of sound wave is

An electronically driven loudspeaker is placed near the open end of a resonance column apparatus. The length of air column in the tube is 80 cm. The frequency of the loudspeaker can be varied between 20 Hz and 2 kHz. Find the frequencies at which the column will resonate. Speed of sound in air = 320 m s^-1

A stationary source of sound is emitting sound of frequency 500Hz . Two observers A and B lying on the same line as the source, observe frequencies 480Hz and 530 Hz respectively. The velocity of A and B respectively are (in m//s ), speed of sound =300m//s .

Two identical loudspeakers are located at points A & B, 2 m apart. The loudspecakers are driven by the same amplifier. A small detector is moved out from B along a line perpendicular to the line connecting A & B. Taking speed of sound in air as 332 m"/"s . Find the frequency below which there will be no position along the line BC at which destructive interference occurs.

Two sirens situated one kilometer apart are producing sound of frequency 330 Hz. An observer starts moving from one siren to the other with a speed of 2m//s . If the speed of sound be 330 m//s , what will be the beat frequency heard by the observer?

Two small loudspeakers A , B ( 1m apart) are connected to the same oscillator so that both emit sound waves of frequency 1700 Hz in phase . A sensitive detector , detects a maximum wave at P on the perpendicular bisector MP of AB and another maximum wave when it first reaches a point Q directly opposite to B . Calculate the speed c of the sound waves in air .