Question

A closed organ pipe 70 cm long is sounded .If the velocity of sound is `331m//s`,what is the fundamental frequency of vibration of the air column ?

Answer 1

`l = 70 cm=70 xx 10^(-2) m, v= 331 m //s ,v= ?`
`v= ( v)/( 4l) =( 331)/( 4 xx 70 xx 10^(-2)) = 118.2 Hz`