Two sources of sound `S_(1)` and `S_(2)` produce sound waves of same frequency `660 Hz`. A listener is moving from source `S_(1)` towards `S_(2)` with a constant speed `u m//s` and he hears `10` beats/s. The velocity of sound is `330 m//s`. Then, `u` equals :
Two source of sound S1 and S2 produce sound waves of same frequency 660 Hz. A listener is moving from source S1 towards S2 with a constant speed um/s and he hears 10 beat/s. Then, u is equal to ________ (in m/s).
Two sources A and B are sounding notes of frequency 660 Hz. A listener moves from A to B with a constant velocity u. If the speed is 330 m/s , what must be the value of u so that he hears 8 beats 8 per second ?
Two sources A and B are sounding notes of frequency 680 Hz. A listener moves from A to B with a constant velocity u. If the speed of sound is 340 m/s, What must be the value of u so that he hears 10 beats per second?
Two sound waves of wavelength 10 m and 10.1 m produces 0.33 beats/s. Then the velocity of sound is
A siren emitting sound of frequency 800 Hz is going away from a static listener with a speed of 30 m/s. Frequency of the sound to be heard by the listener is ( Take velocity of sound as 300 m/s )
A source is moving towards an observer with a speed of 20 m / s and having frequency of 240 Hz . The observer is now moving towards the source with a speed of 20 m / s . Apparent frequency heard by observer, if velocity of sound is 340 m / s , is
A source is moving towards a stationary observer, so that the apparent frequency increases by 50%. If velocity of sound is 330 m/s, then velocity of source is
A siren emiting sound of frequency 800Hz is going away from a static listence with a speed of 30 m//s frequency of sound to be beand by the listener is ("velocity of sound" = 330 m//s)
S_(1) and S_(2) are two coherent sources of sound of frequency 110Hz each they have no initial phase difference. The intensity at a point P due to S_(1) is I_0 and due to S_2 is 4I_0 . If the velocity of sound is 330m//s then the resultant intensity at P is
Two coherenet source of sound S_(1) and S_(2) produce sound waves of the same wavelength lambda = 1 m , in phase , S_(1) and S_(2) are placed 1.5 m a part ( see fig). A listener , loacted at L , directly in fornt of S_(2) finds that the intensity is at a minimum when he is 2 m away form S_(2) . The listener moves aways form S_(1) keeping his distance for S_(2) fixed . The adjacent maximum of inesity is observed when the listener is at a distane d from S_(1) . Then d is
