Q 11-14-023NEETJEE MainMedium
A source of frequency $500$ Hz moves towards a stationary observer at $30$ m/s. If the speed of sound is $330$ m/s, the frequency heard is
Answer: (C) $550$ Hz
$f' = f\dfrac{v}{v - v_s} = 500 \times \dfrac{330}{300} = 550$ Hz.
Solution by Sreeraj P, M.Sc Physics