MHT CET · Physics · Waves and Sound
Two consecutive harmonics of an air column in pipe closed at one end are of frequencies \(150 \mathrm{~Hz}\) and \(250 \mathrm{~Hz}\). The fundament frequency of an air column is
- A \(25 \mathrm{~Hz}\)
- B \(75 \mathrm{~Hz}\)
- C \(100 \mathrm{~Hz}\)
- D \(50 \mathrm{~Hz}\)
Answer & Solution
Correct Answer
(D) \(50 \mathrm{~Hz}\)
Step-by-step Solution
Detailed explanation
In a pipe closed at one end only odd harmonics of the fundamental are produced, i.e., \(50 \mathrm{~Hz}, 150 \mathrm{~Hz}, 250 \mathrm{~Hz}\). Hence fundamental frequency is \(50 \mathrm{~Hz}\)
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