Questions
A bus is moving towards a huge wall with a velocity of 5 m/s. The driver sounds a horn of frequency 200 Hz. Speed of sound in air is 342 m/s. Beat frequency heard by passenger is
detailed solution
Correct option is C
f′=f0v+vsv−vs=206Hz Beats =f′−f0=6HzTalk to our academic expert!
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The frequency of a radar is 780 MHz. The frequency of the reflected wave from an aeroplane is increased by 2 .6 kHz. The velocity of aeroplane is
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