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 frequency between these two sound, if the true frequency of the source is 680 Hz. Velocity of sound `-340m//s`.

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 .

An ambulance fitted with a siren of v = 400 Hz is going towards a vertical wall at a speed of 54 km/hr. A person standing on the road, behind the ambulance, listens to the siren sound coming from the ambulance as well as that coming after reflection from the wall. Calculate the apparent frequency of the sound wave (a) directly coming from the siren to the person, and (b) coming after reflection from the wall Take, speed of sound = 340 m/s

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

A source and an observer move away from each other with a velocity of 10 m/s with respect to ground. If the observer finds the frequency of sound coming from the source as 1950 Hz , then actual frequency of the source is (velocity of sound in air = 340 m/s )

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 is moving away from an observer at rest with a velocity of 50 m s^(-1) . If the frequency of sound is 200 Hz , find the apparent frequency observed by the observer. (Take velocity of sound = 300 m s^(-1))

If a vibrating fork is rapidly moved towards a wall, beats may beheard between the direct and reflected sounds. Calculate beat frequency if the frequency of fork is 512 Hz and approaches the wall with a velocity of 300 cm/s. The velocity of sound is 330 m/s. Consider observer is behind the fork.