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A source of sound of frequency 256 Hz is moving rapidly towards a wall with a velocity of 5 m/s. The speed of sound is 300 m/s. If the observer is between the wall and the source, then beats per second heard will be
Options
(a) 7.8 Hz
(b) 7.7 Hz
(c) 3.9 Hz
(d) Zero
Correct Answer:
7.8 Hz
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The angular velocity of second’s hand of a watch is
- The magnetic field in a certain region of space is given by B =8.35×10⁻² Î T.
- A photoelectric surface is illuminated successively by monochromatic light of wavelength
- A vertical spring with force constant k is fixed on a table. A ball of mass
- The additional energy that should be given to an electron to reduce its de-Broglie
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Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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