MHT CET · Physics · Waves and Sound
What should be the length of a closed pipe to produce resonance with sound wave
of wavelength \(62 \mathrm{~cm}\), in fundamental mode?
[Neglect end correction]
- A \(31 \mathrm{~cm}\)
- B \(15 \cdot 5 \mathrm{~cm}\)
- C \(20 \cdot 6 \mathrm{~cm}\)
- D \(46 \cdot 5 \mathrm{~cm}\)
Answer & Solution
Correct Answer
(B) \(15 \cdot 5 \mathrm{~cm}\)
Step-by-step Solution
Detailed explanation
(C)
In a closed pipe in fundamental mode the length of the pipe is \(\frac{\lambda}{4}\). \(\therefore \ell=\frac{62}{4}=15.5 \mathrm{~cm}\)
In a closed pipe in fundamental mode the length of the pipe is \(\frac{\lambda}{4}\). \(\therefore \ell=\frac{62}{4}=15.5 \mathrm{~cm}\)
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