An engine driver moving towards a wall with a velocity of 60 m/s emits a note of 1400 Hz. Speed of sound in air is 340 m/s .The frequency of the note after reflection from the wall as heard by the engine driver is

An engine is moving towards a wall with a velocity 50 ms^(-1) emits a note of 1.2 kHz . Speed of sound in air = 350 ms^(-1) . The frequency of the note after reflection from the wall as heard by the driver of the engine is

An engine driver moving towards a wall with velocity of 50 ms^(-1) emits a note of frequnecy 1.2 kHz . The frequency of note after reflection from the wall as heard by the engine driver when speed of sound in air is 350 ms^(-1) is :

An engine driver moving towards a wall with velocity of 50m/s emits a note of frequcency1.5kHz. The frequency of note after reflection from the wall as hear by the engine driver when speed of sound in air is 350m/s is

An engine driver moving towards a wall with velocity of 50m/s emits a note of frequcency1.5kHz. The frequency of note after reflection from the wall as hear by the engine driver when speed of sound in air is 350m/s is

An engine driver moving towards a wall with velocity of 50ms^(-1) emits a note o frequency 1.2kHz. The frequyency of note after reflection from the wall is eard by the engine driver when speed of sound in air is 350ms^(-1) is

An engine driver moving towards a wall with velocity of 50ms^(-1) emits a note o frequency 1.2kHz. The frequyency of note after reflection from the wall is eard by the engine driver when speed of sound in air is 350ms^(-1) is

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

An automobile moving at 30 m/s is approaching a factory whistle that has a frequency of 500 Hz. If the speed of the sound in air is 340 m/s, then the apparent frequency of the whistle as heard by the driver is