Questions
A person going away from a gate keeper on a scooter at a speed of 10 m/s blows a horn of frequency 600 Hz. If speed of sound is 340 m/s find the apparent frequency heard by the gatekeeper.
detailed solution
Correct option is B
Here source is moving away from the observer so apparent frequency n′=vv+vsnWe have vs = 10 m/s n = 600 Hz , v = 340 m/sn′=340340+10×600=583HzTalk to our academic expert!
Similar Questions
A source of sound of frequency 500 Hz is fixed to the end of a light string and is whirled in a vertical circle of radius 1 . 6 m. The string just remains taut when the source is at the highest point. An observer is located at a large distance, in the same vertical plane and at the same height of the vertical circle. Find the maximum apparent frequency heard by the observer if the velocity of sound in air is 330 m,/sec
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