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Question
When source of sound moves towards a stationary observer, the wavelength of sound received by him ______.
Options
decrease while frequency increase
remains the same whereas frequency increases
increases and frequency also increases
decreases while frequency remains the same
MCQ
Fill in the Blanks
Solution
When source of sound moves towards a stationary observer, the wavelength of sound received by him decrease while frequency increase.
Explanation:
Apparent frequency,
na = n`["v"/("v"-"v"_"s")]` i.e., frequency increase
As frequency increases, so wavelength decreases.
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