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

two speakers A and B , placed 1 m apart, each produces sound waves of frequnecy 1800 Hz. In phase. A detector moving parallel to line of speakers distant 2.4 m away detects a maximum intensity at O nd then at P. speed of sound wave is

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 .

A spherical source of power 4 W and frequency 800 Hz is emitting sound waves. The intensity of waves at a distance 200 m is

Calculate the wavelength of a sound wave having a frequency 300 Hz and speed 330 m//s .

A sound wave of frequency 280 Hz has an intensity of 1.00 W//m2 ? What is the amplitude of the air oscillations caused by this wave?

Towards a stationary object, a train is moving with a speed of 300 m/s and emits a sound wave of frequency 2000 Hz. Small percentage of the sound is reflected back to train in the form of echo. The frequency of the echo as detected by a person sitting in the train will be (speed of sound is 340 m/s).

When two sound waves of frequencies 60 Hz and 62 Hz are produced simultaneously, then the time interval between successive intensity maxima is