MHT CET 2023 Physics question
Consider the Doppler effect in two cases. In the first case, an observer moves toward a stationary source of sound with a speed of 50 m/s. In the second case, the observer is at rest and the source moves towards the observer with the same speed 50 m/s. Then the frequency heard by the observer will be [velocity of sound in air =300 m/s.]
Answer: (B)
Solution
Case 1 (observer moves toward stationary source): . Case 2 (source moves toward stationary observer): . Since , the frequency
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