Physics - Sound Wave Question with Solution | TestHub
PhysicsSound WaveEquation/Relation between Displacement & excess pressureMedium2 minQB
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A tuning fork of frequency 512 Hz is vibrated with a sonometer wire and 6 beats per second are heard. The beat frequency reduces if the tension in the string is slightly increased. The original frequency of vibration of the string is-
Options:
Answer:
A
Solution:
The tuning fork frequency is Hz.
Beat frequency is Hz.
The string's initial frequency can be , so .
Thus, Hz or Hz.
When tension increases, the string's frequency increases. Since the beat frequency reduces, the original frequency must be Hz. If it were Hz, increasing tension would increase further, increasing the beat frequency.
Stream:JEESubject:PhysicsTopic:Sound WaveSubtopic:Equation/Relation between Displacement & excess pressure
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