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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
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If a given volume of water in a 220V heater is boiled in 5 min, then same volume
- Two radiations of photons energies 1 eV and 2.5 eV, successively
- All components of the electromagnetic spectrum in vacuum have the same
- A gas is suddenly expanded such that its final volume becomes 3 times
- The total energy of an electron in the first excited state of hydrogen atom
Topics: Waves (80)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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