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Two sources P and Q produce notes of frequency 660 Hz each. A listener moves from P to Q with a speed of 1 ms⁻¹. If the speed of sound is 330 m/s, then the number of beats heard by the listener per second will be
Options
(a) zero
(b) 4
(c) 8
(d) 2
Correct Answer:
4
Explanation:
∆f / f = v / C
(beats) /2 / f = v / C
Beats = 2 fv / C = 4
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Topics: Waves
(80)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A point source is kept at a distnace 1000m has an illumination I. To change the illumination
- The flux linked with a circuit is given by φ=t³+3t-7. The graph between time
- A bullet comes out of the barrel of gun of length 2m with a speed of 800 m/s
- A block of mass 4 kg is kept on a rough horizontal surface.The coefficient of static
- If energy(E), velocity(V) and time(T) are chosen as fundamental quantities,
Topics: Waves (80)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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