## Question

###### (a) Draw a diagram for a pipe that is closed on both ends and have 6 loops of standing ` waves and derive an equation for nth frequency of vibration in terms of speed of sound and length of the pipe: (6) If the length of the pipe is 120 cm; what is fundamental frequency and first overtone produced by the pipe if speed of sound in air is 343 m/s.

(a) Draw a diagram for a pipe that is closed on both ends and have 6 loops of standing ` waves and derive an equation for nth frequency of vibration in terms of speed of sound and length of the pipe: (6) If the length of the pipe is 120 cm; what is fundamental frequency and first overtone produced by the pipe if speed of sound in air is 343 m/s.

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