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 sound as observed by an ant sitting on the wall.

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

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 wavelength of sound waves returning towards the car after reflection from the wall is

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, 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

The frequency of a rod is 200 HZ. If the velocity of sound in air is 340ms^(-1) , the wavelength of the sound produced is

The driver of a car travelling with speed 30ms^-1 towards a hill sounds a horn of frequency 600 Hz. If the velocity of sound in air is 330ms^-1 , the frequency of reflected sound as heard by driver is

a bus is moving towards and stationary observer with speed 20 m/s blows a horn of frequency 200 Hz. the frequency of sound heard by the observer is approximately ( take speed of sound 320 m/s)

A source emits a frequency of "290Hz" .An observer is moving away from the source with a velocity "20ms^(-1)" and the source is moving away from the observer with a velocity "10ms^(-1)" .The wind is blowing in a direction from the observer to the source with a velocity "5ms^(-1)" .The apparent frequency heard by the observer is (Velocity of sound in air "=343ms^(-1)" )