An ambhulance blowing a siren of frequency 700Hz is travelling slowly towards vertical reflectoing wall with a speed 2m/s. The speed of sound is 350m/s. How many beats ar heard per sec to the driver of het ambluance?

An ambulance blowing a siren of frequency 700 Hz is moving with a speed of 2m/s towards a vertical wall. The speed of sound is 352 m/s. Then the frequency of the reflected sound as heard by the driver of ambulance would be

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 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 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 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

As shown if Fig. a vibrating tuning fork of frequency 512 Hz is moving towards the wall with a speed 2(m)/(s) . Take speed of sound as v=340(m)/(s) and answer the following questions. Q. If the listener, along with the source, is moving towards the wall with the same speed i.e., 2(m)/(s) , such that the source remains between the listerner and the wall, number of beats heard by the listerner per second will be

As shown if Fig. a vibrating tuning fork of frequency 512 Hz is moving towards the wall with a speed 2(m)/(s) . Take speed of sound as v=340(m)/(s) and answer the following questions. Q. If the listerner along with the source is moving towards the wall with the same speed i.e., 2(m)/(s) , such that he (listener) remains between the source and the wall, number of beats heard by him will be