A sound source of frequency 600 Hz is moving towards an observer with velocity 20m/s. The speed of sound is 340m/s. The frequency heard by observer will be
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A radar sends a radio signal of frequency 9 x 10^{9} Hz towards an aircraft approaching the radar. If the reflected wave shows a frequency shift of 3 X 10^{3} Hz, the speed with which the aircraft is approaching the radar in m/s is (velocity of radio signal is 3 X 10^{8 }m/s).
A police car moving at 22 m/s, chases a motor cyclist. The police man sounds his horn at 176 Hz while both of them move towards a stationary siren of frequency 165 Hz. Calculate the speed of the motor cyclist, if it is given that he does not hear any beats. (Velocity of sound = 330 m/s).
If a source of sound was moving toward a receiver at 1/3 the speed of sound, what would the resulting wavelength be?
A whistle producing sound waves of frequencies 9500 Hz and above is approaching a stationary person with speed v ms^{1}. The velocity of sound in air is 300 ms^{1}. If the person can hear frequencies up to 10000 Hz, the maximum value of v upto which he can the whistle is
If the source of sound moves at the same speed or faster than speed of the wave then it results in
Two trains A and B approach a station from opposite sides, sounding their whistles. A stationary observer on the platform hears no beats. If the velocities of A and B are 15 m/s and 30 m/s respectively and the real frequency of the whistle of B is 600 Hz, the real frequency of the whistle of A is (Velocity of sound = 330 m/s).
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