Two whistles A and B have frequencies 660 Hz and 590 Hz respectively. An observer is…
Physics · JEE Advanced · NTA Exams — Oscillations and Waves
Two whistles A and B have frequencies 660 Hz and 590 Hz respectively. An observer is standing in the middle of line joining the two sources. Source B and observer are moving towards right with velocity 30 m/s and A is standing to the left side. If the velocity of sound in air is 300 m/s. Then:
- beat frequency is 6Hz
- beat frequency is 4Hz
- apparent wavelength for B is 0.45
- apparent wavelength for B is 45m
Answer
(B) beat frequency is 4Hz, (C) apparent wavelength for B is 0.45
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