A musician using an open flute of length 50cm produces second harmonic sound waves. A person runs towards the musician from another end of a hall at a speed of 10km/h. If the wave speed is 330m/s, the frequency heard by the running person shall be close to:
666Hz
500 Hz
333 Hz
753 Hz
Doppler Effect -
When a source of sound and a listener are in motion relative to each other, the frequency of the sound heard by the listener is not the same as the source frequency.
-
Frequency produced by flute
Velocity of obserever =
Frequency of observer
666Hz
Option 2)500 Hz
Option 3)333 Hz
Option 4)753 Hz
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