Physics The speed of sound in hydrogen is _____________ time than that in oxygen? Options:A. Two timesB. Three timesC. Four timeD. Six timeView AnswerC. Four time 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?