A siren is fitted on as car going towards a vertical wall at a speed of 36 km/h. A person standing on the ground, behind the car, listens to the siren sound coming directly from the source as well as that coming after refelction from the siren to the person and b. coming after reflection. Take the speed of sound to be `340ms^-1`

An ambulance fitted with a siren of v = 400 Hz is going towards a vertical wall at a speed of 54 km/hr. A person standing on the road, behind the ambulance, listens to the siren sound coming from the ambulance as well as that coming after reflection from the wall. Calculate the apparent frequency of the sound wave (a) directly coming from the siren to the person, and (b) coming after reflection from the wall Take, speed of sound = 340 m/s

A scooterist moves towards a vertical wall with a speed of 54 km h^(-1) . A person is standing on the ground and is behind the scooter , hears the sound . If the scooterist sounds the horn of frequency 400 Hz , calculate the apparent frequency sound heard by the person when (a) It is coming directly from the horn. (b) coming after reflection from the vertical wall. (Take speed of sound to be 330 m s^(-1) )

A tuning fork of frequency 328Hz is moved towards a wall at a speed of 2ms^(-1) . An observer standing on the same side as the fork hears two sounds, one directly from the fork and the other reflected from the wall. Number of beats per second is (Velocity of sound in air 330ms^(-1) ).

A siren emitting a sound of frequency 1000 H_(Z) moves away from you towards a cliff at a speed of 10 m//s . (a) What is the frequency of the sound you hear coming directly from the sirven ? (b) What is the frequency of sounds you hear reflected off the cliffb ? (c) What beat frequency would you hear ? Take the speed of sound in air as 330 m//s .

A siren emitting a sound of frequency 2000 Hz moves away from you towards a cliff at a speed of 8 m/s. (a) What is the frequency of the sound you hear coming directly from the siren. (b) What is the frequency of sound you hear reflected off the cliff. Speed of sound in air is 330(m)/(s) .

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 person standing at a distance of 6 m from a source of sound receives sound wave in two ways, one directly from the source and other after reflection from a rigid boundary as shown in figure. The maximum wavelength for which, the person will receive maximum sound intensity, is

A person going away from a factory on his scooter at a speed of 36 km/hr listens to the siren of the factory. If the actual frequency of the siren is 700 Hz and a wind is blowing along the direction of the scooter at 36 km//hr, find the observed frequency heard by the person. (Given speed of sound = 340 m//s )

A siren emitting sound of frequency 500 Hz is going away from a static listener with a speed of 50 m / sec . The frequency of sound to be heard, directly from the siren, is