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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
- Time taken by light to cross a glass slab of thickness 4 mm and refractive index 3 is
- Four indentical thin rods each of mass M and length l, form a square frame
- The potential energy of a simple harmonic oscillator when the particle is half way
- Electromagnetic induction is not used in
- A U²³⁵ reactor generates power at a rate of P producing 2×10⁸ fission per second.
Topics: Waves (80)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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