MHT CET · Physics · Waves and Sound
A sound source is moving towards a stationary observer with \(\left(\frac{1}{10}\right)^{\text {th }}\) the speed of sound, The ratio of apparent to real frequency is
- A \(\frac{10}{9}\)
- B \(\frac{11}{10}\)
- C \(\left(\frac{11}{10}\right)^2\)
- D \(\left(\frac{9}{10}\right)^2\)
Answer & Solution
Correct Answer
(A) \(\frac{10}{9}\)
Step-by-step Solution
Detailed explanation
\( f' = f \left( \frac{v}{v - v_s} \right) \) \( \frac{f'}{f} = \frac{v}{v - \frac{v}{10}} \)
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