As the air column of length L in an air pipe decreases, the frequency of the stationary wave emitted? by Sunday | Mar 13 | Physics WAEC | 0 comments A. decreases B. increases C. varies as L² D. varies as √L Correct Answer: Option A A. decreases Users Also Read These:A certain wave has a speed of 20ms-1. If the…If a light wave has a wavelength of 500nm in air…An open pipe closed at one end produces its first…Which of the following statements about the 3rd…The diagram above illustrates a wave setup between…