A) 300 Hz
B) 350 Hz
C) 375 Hz
D) 415 Hz
Correct Answer: D
Solution :
Key Idea: When length of air column is \[\frac{\lambda }{4},\] then first resonance occurs. If we adjust the length of air-column in closed organ pipe as such its any natural frequency equals to the frequency of tuning fork, then the amplitude of forced vibrations of air-column increases very much. This is the state of resonance. At first resonanceYou need to login to perform this action.
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