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A sound source is moving towards a stationary listener with 1/10th of the speed of sound. The ratio of apparent to real frequency is
Options
(a) (10/9)
(b) (10/9)²
(c) (11/10)²
(d) (11/10)
Correct Answer:
(10/9)
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
- Three capacitors 3μF,6μF and 6μF are connected in series to a source of 120V.
- A thin rod of length L and mass M is held vertically with one end on the floor
- An electric motor runs on DC source of emf 200 V and draws a current of 10 A.
- The time by a photoelectron to come out after the photon strikes is approximately
- Three capacitors of capacitances 3 μF, 10 μF and 15 μF are connected in series
Topics: Waves (80)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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let the origional frequency is F.Now we know that when source moving toward listener then according to doppler effect the frequency of sound waves will be
f”=vF/v-b
f”=340F/340-34
as source is moving with 1/10 of speed of sound so we put 340/19=34,as speed of sound in air 340 m/s
so f”=340/306=10F/9 ratio will be f”/f=10/9