A musician suing an open flute of length 50 cm produces second harmonic sound waves. A persons runs towards the musician from another end of a hall at a speed of 10km/h. If the wave speed is 330 m/s, the frequency heard by the running person shall be close to
a.
753 Hz
b.
500 Hz
333 Hz
d.
666 Hz
a.
753 Hz
b.
500 Hz
333 Hz
d.
666 Hz
Question ID - 50119 | SaraNextGen Top Answer A musician suing an open flute of length 50 cm produces second harmonic sound waves. A persons runs towards the musician from another end of a hall at a speed of 10km/h. If the wave speed is 330 m/s, the frequency heard by the running person shall be close to
a.
753 Hz
b.
500 Hz
333 Hz
d.
666 Hz
A musician suing an open flute of length 50 cm produces second harmonic sound waves. A persons runs towards the musician from another end of a hall at a speed of 10km/h. If the wave speed is 330 m/s, the frequency heard by the running person shall be close to
|
a. |
753 Hz |
b. |
500 Hz |
|
|
333 Hz |
d. |
666 Hz |
1 Answer
127 votes
Answer Key / Explanation : (d) -
Frequency of the sound produced by flute,
f = 2
Hz
Velocity of observer, v0 = 10×
∴ Frequency detected by observer, f =
∴ f= 
= 335.56×2 = 671.12
∴ closer answer is (d)
127 votes
Answer Link
127