AP EAMCET · PHYSICS · Waves and Sound
A closed pipe is in resonance with a tuning fork at \(27^{\circ} \mathrm{C}\) when its length is \(20 \mathrm{~cm}\). If the pipe is to be in resonance with the same tuning fork at \(7{ }^{\circ} \mathrm{C}\) then the change in the length of the pipe required is nearly
- A \(1 \mathrm{~mm}\)
- B \(7 \mathrm{~mm}\)
- C \(5 \mathrm{~mm}\)
- D \(13 \mathrm{~mm}\)
Answer & Solution
Correct Answer
(B) \(7 \mathrm{~mm}\)
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