Question

A source of sound S is moving with the velocity of 50 m/s towards a stationary observer. The observer measures the frequency of the sound as 1000 Hz. What will be the apparent frequency of the source when it is moving away from the observer after crossing him? (Take velocity of sound in air is 350 m/s)
(A) 1143 Hz (B) 857 Hz
(C) 750 Hz (D) 807 Hz

Answer 1

$\huge\bold{1143Hz}$

Answer ⬆

Answer 2

Answer:

(C) 750 Hz the correct answer.....

Thanks for the question....