A car with a horn of frequency 620 Hz travels towards a large wall with a speed of `20 ms ^(-1) ` velocity of sound is ` 330 ms ^(-1)` The frequency of echo of sound of horn as heard by the driver is

A car with a horn of frequency 620 Hz, travels towards a large wall with a speed 20ms^-1 . If velocity of sound is 330ms^-1 the frequency of echo of sound of horn as heard by driver

A car with a hom of frequency 620 Hz travels towards a large wall with a speed of 20 m//s . velocity of sound is 330 m//s . The frequency of echo of sound of hom as heard by the driver is

A car with a horn of frequency 620 Hz travels towards a large wall at a speed of 20 ms^(-1) the frequency of echo of sound as heard by the driver is x xx10^2Hz , what is the value of x (velocity of sound -330m/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

A source of sound emitting sound with frequency 540Hz approaches a staionary observer with a speed of 30 ms^-1 . If velocity of sound is taken as 330 ms^-1 , the frequency as heard by the observer will be

A car sounding its horn at 480 Hz moves towards a high wall at a speed of 20 ms^-1 . If the speed of sound is 340 ms^-1 , the frequency of the reflected sound heard by the passenger sitting in the car will be nearest to

A car moving towards a vertical wall with a speed of 20ms^(-1) sounds a horn of frequency 765Hz .The wall is moving away from the car; their relative velocity of separation being 20ms^(-1) .Also there is a wind that is blowing in a direction from car towards the wall at a speed of 20ms^(-1) .The speed of sound in still air is 340ms^(-1) . The frequency of the echo of the horn received by the driver of the car is