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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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- The frequency of a light wave in a material is 2 x 10¹⁴ Hz and wavelength is 5000Å.
- For a parallel beam of monochromatic light of wavelength λ diffraction is produced
- A uniform force of (3i+j) Nacts on a particle of mass 2 kg.Hence the particle is displaced
- A tube of length L is filled completely with an incompressible liquid of mass
- The electric and magnetic field assiciated with an E.M. wave
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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