The speed of sound in hydrogen gas at N . T . P is 1328 m s - 1 . If the density of hydrogen is 1 16 th of that of air, then the speed of sound in air at N . T . P is

Question

The speed of sound in hydrogen gas at N . T . P is 1328 m s - 1 . If the density of hydrogen is 1 16 th of that of air, then the speed of sound in air at N . T . P is, 340 m s - 1, 332 m s - 1, 320 m s - 1, 280 m s - 1

MARKS App · Accepted Answer

Here, v H 2 = 1328 m s − 1 ; ρ H 2 = ρ air 16 ; v = γP 8 Let v air be the velocity of sound in air at N.T.P Now , v air v H 2 = ρ H 2 ρ air { Since γ H 2 = γ air } or v air = v H 2 ρ H 2 ρ air or v air = 1328 ρ air 16 ρ air = 1328 1 16 = 1328 4 v air = 332 m s − 1

Search any question & find its solution

Looking for more such questions to practice?