A car emitting sound of frequency 500 Hz speeds towards a fixed wall at `4(m)/(s)`. An observer in the car hears both the source frequency as well as the frequency of sound reflected from the wall. If he hears 10 beats per second between the two sounds, the velocity of sound in air will be

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 source of sound with frequency 256 Hz is moving with a velocity V towards a wall and an observer is stationary detween the source and the wall. When the observer is between the source and the wall he will hear beats.

A driver in a stationary car horns which produces monochromatic sound waves of frequency n=1000Hz , normally towards a reflecting wall. If the wall approaches the car will a velocity u=3.3(m)/(s) , calculate the frequency of sound reflected from wall and heard by the driver. What is the percentage change of sound frequency of reflection from the wall?

An observer is moving towards a wall at 2ms^(-1) . He hears a sound from source at some distance behind him directly as well as after reflection from the wall. Calculate the beat freqecny between these two sound, if the true frequency of the source is 680 Hz. Velocity of sound -340m//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) .

The driver of a car travelling with a speed of 30 m/s towards a wall sounds a siren of frequency 500 Hz. If the velocity of sound in air is 330 m/s, then the frequency of the sound reflected from the wall and as heard by the driver is

A source of sound of frequency 500 Hz is moving towards an observer with velocity 30 m/s . The speed of sound is 330 m/s . the frequency heard by the observer will be

A bat flies perpendicularly towards a wall with a speed of 6 m/s, emitting sound of frequency 450 kHz. What is the frequency of the wave reflected from the wall that it will hear? Given c=340(m)/(s) ?

A car, sounding a horn of frequency 1000 Hz, is moving directly towards a huge wall at a speed of 15 m/s. If speed of sound is 340 m/s, then the frequency of the echo heard by the driver is