AP EAMCET · PHYSICS · Waves and Sound
The wavelengths of two notes in air are \(\frac{36}{195} \mathrm{~m}\) and \(\frac{36}{193} \mathrm{~m}\). Each note produces 10 beats per second separately with a third note of fixed frequency. The velocity of sound in air in \(\mathrm{m} / \mathrm{s}\) is
- A \(330\)
- B \(340\)
- C \(350\)
- D \(360\)
Answer & Solution
Correct Answer
(D) \(360\)
Step-by-step Solution
Detailed explanation
Adding Eqs. (i) and (ii), we get \( \begin{aligned} & \frac{v}{18}=20 \\ \Rightarrow \quad v & =360 \mathrm{~ms}^{-1} \end{aligned} \)
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