Physics - Sound Wave Question with Solution | TestHub
PhysicsSound WaveWavesMedium2 minQB
PhysicsMediumsingle choice
The voice of a person who has inhaled helium has a remarkably high pitch. Explain on the basis of resonant vibration of vocal cord filled with air and with helium. The pitch rises because:
Options:
Answer:
A
Solution:
The vocal tract acts like a pipe of fixed length, with resonant frequencies . Speed of sound in helium is about three times that in air, so the resonant frequencies are about three times higher.
Stream:JEESubject:PhysicsTopic:Sound WaveSubtopic:Waves
⏱ 2mℹ️ Source: QB
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