AP EAMCET · PHYSICS · Waves and Sound
When both source of sound and observer approach each other with a speed equal to \(10 \%\) of the speed of sound, then the percentage change in frequency heard by the observer is nearly
- A \(33.3 \%\)
- B \(12.2 \%\)
- C \(22.2 \%\)
- D \(11.1 \%\)
Answer & Solution
Correct Answer
(C) \(22.2 \%\)
Step-by-step Solution
Detailed explanation
\(f' = f \left( \frac{v + v_o}{v - v_s} \right)\) \(f' = f \left( \frac{v + 0.1v}{v - 0.1v} \right) = f \left( \frac{1.1v}{0.9v} \right) = \frac{11}{9}f\)…
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