The speed of sound in air at 0o C is nearly :
(a) 1450 m s−1
(b) 450 m s−1
(c) 5100 m s−1
(d) 330 m s−1
The speed of light in air is :
(a) 3×108 m s−1
(b) 330 m s−1
(d) 3×1010 m s−1
The constant γ for oxygen as well as for hydrogen is 1.40. If the speed of sound in oxygen is 470 m s−1, what will be the speed in hydrogen at the same temperature and pressure?