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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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Topics: Waves
(80)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The current through an inductor changes from 3 A to 2 A is 1 m/s. If induced e.m.f.
- The mirrors are inclined at an angle of 50⁰. The number of images formed for an object
- A piece of marble is projected from the earth’s surface with velocity of 50 m/s
- The radius of a ball is(5.2±0.2)cm.The percentage error in the volume of the ball
- The magnetic field in a certain region of space is given by B =8.35×10⁻² Î T.
Topics: Waves (80)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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