Waves - Result Question 75
77. An observer moves towards a stationary source of sound with a speed th of the speed of sound. The wavelength and frequency of the sound emitted are and respectively. The apparent frequency and wavelength recorded by the observer are respectively.
[2003]
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 77. (c)
Solution:
- (c) Wavelength remains constant (unchanged) in this case.