Physics Velocity of sound in vacuum is ____________________? Options:A. 332 ms-1B. 320 ms-1C. ZeroD. 224 ms-1View AnswerC. Zero Continue Reading Previous: A stationary wave is set up in the air column of a closed pipe. At the closes end of the pipe _____________________?Next: Fundamental frequency of stationary waves in open pipe is ______________ times the frequency in closed pipe?