MHT CET · Physics · Waves and Sound
A pipe open at both ends has length \(1 \mathrm{~m}\). The air column in the pipe can not resonate for a frequency (Neglect end correction, speed of sound in air \(=340 \mathrm{~m} / \mathrm{s}\) )
- A \(510 \mathrm{~Hz}\)
- B \(85 \mathrm{~Hz}\)
- C \(170 \mathrm{~Hz}\)
- D \(340 \mathrm{~Hz}\)
Answer & Solution
Correct Answer
(B) \(85 \mathrm{~Hz}\)
Step-by-step Solution
Detailed explanation
\(f_n = \frac{nv}{2L}\) \(f_n = \frac{n \times 340 \mathrm{~m/s}}{2 \times 1 \mathrm{~m}} = n \times 170 \mathrm{~Hz}\)
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