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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
- A wheel of mass 10 kg has a moment of inertia of 10 kgm² about its own axis
- If a full wave rectifier circuit is operating from 50 Hz mains, the fundamental
- Ohm’s law is not applicable except to
- A small rod of bismuth is suspended freely between the poles of a strong electromagnet.
- A charged oil drop is suspended in a uniform field at 3×10⁴ V/m so that it neither falls
Topics: Waves (80)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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