Question

The speed of sound in hydrogen at NTP is 1270 m/s. Then the speed in a mixture of hydrogen and oxygen in the ratio 4:1 by volume, (in m/s) will be
(1) 64.3 m/s
(2) 16.2 m/s
(3)23.2 m/s
(4) 32.2 m/s

Answer 1

64.3m/s.....,.........

Answer 2

After all the calculation my answer is 1) option
64.3 m/s