A closes organ pipe of length 20 cm is sounded with a tuning fork in resonance. What is the frequency of the tuning fork? (v = 332 m/s)

A closes organ pipe of length 20 cm is sounded with a tuning fork in r

1.	A closes organ pipe of length 20 cm is sounded with a tuning fork in resonance. What is the frequency of the tuning fork? (v = 332 m/s)
Answer» 300 Hz 350 Hz 375 Hz 415 Hz Solution :In resonance , the FREQUENCY of the FORK is equal to the frequency of the organ pipe `f = (V)/(4L) = (332)/(4 xx 0.2) = 415` Hz