Show that the frequency of sound vibrations emitted by a source will appear to be doubled to a listener fixed in space when the source approaches the listener with a speed equalling half the speed of sound.

The frequency of sound reaching a stationery listener behind a moving source is

The apparent frequency is f_(1) when a souece of sound approches a stationary obsever with a speed u and f_(2) when the observe approaches the stationary source with same speed. If v is the velocity of sound, then

A sound source moves with a speed of 80 m//s relative to still air toward a stationary listener. The frequency of sound is 200 H_(Z) and speed of sound in air is 340 m//s . (a) Find the wavelength of the sound between the source and the listener. (b) Find the frequency heard by the listener.

the minimum distance between the reflecting surface and source for listening the eco of sound is ( take speed of sound 340 m/s )

When the listener moves towards a stationary source with a velocity v_(1) m the apparent freqency of a note emitted by the source is f' When the listener moves away from the source with the same velocity, the apparent frequency of the note f/f'=3. If v the velocity of sound in air, the value of v//v_(1) is -

A source of sound of frequency 256 Hz is rotating in a circle of radius 3 m with angular speed of 20 rad/s. A listener is standing at rest along the line of centre of the circle. Under which position of the source of sound the listener will hear sound of (a) maximum frequency (b) minimum frequency (c) same frequency as the frequency of source.

Statement-1: Due to the motion of listener, the frequency of the sound waves (as received by listener) emitted by stationary source is affected Statement-2: Due to the motion of source, wavelength of the sound waves (emitted by source) as received by stationary listener is affected. Statement-3: If recever and source both are moving, the observed frequency must be different from the original frequency of source. Treat motion of source or listener as always along a line joining them for all above cases.