Speed of Sound in Gases
Speed of Sound in Gases: Overview
This topic covers concepts, such as, Speed of Sound Waves, Newton's Formula for Speed of Sound Waves in Gases, Variation of Speed of Sound With Molecular Mass of Gas & Relative Humidity etc.
Important Questions on Speed of Sound in Gases
The velocity of sound is directly proportional to the square root of the molecular mass of the gas.

Two mono atomic ideal gases are having molecular masses and respectively. They are enclosed at same temperature using separate containers. The ratio of the speed of sound in gas to that in gas is .

Consider two mono atomic ideal gases and . They are having molecular masses and respectively. They are enclosed at same temperature using separate containers. What is the ratio of the speed of sound in gas to that in gas ?

The velocity of sound is independent of the molecular mass of the gas.

Will the velocity of sound depend upon the molecular mass of the gas?

A bomb explodes at time in a uniform, isotropic medium of density and releases energy , generating a spherical blast wave. The radius of this blast wave varies with time as

The speed of the sound in Oxygen at a certain temperature is The speed of the sound in Helium at the same temperature will be (assume both the gasses to be ideal)

The speed of longitudinal waves in a solid bar is given by

What is the correct expression for the speed of the longitudinal waves?

What was the Laplace correction for the speed of longitudinal wave in an ideal gas?

A tuning fork sends out waves of wavelength 68.75 cm and 3 m in air and hydrogen gas respectively. If the velocity of sound in air is 330 m s-1, find the velocity of sound in hydrogen. Also, find the frequency of the tuning fork

A student plotted the following four graphs representing the variation of velocity of sound in a gas (at constant temperature) with the pressure. Which one is correct?

The pressure wave, , corresponds to the sound produced by a vibrating blade on a day when atmospheric temperature is . On some other day when temperature is , the speed of sound produced by the same blade and at the same frequency is found to be . Approximate value of is:

Estimate the speed of sound in air at standard temperature and pressure. The mass of mole of air is .

In which season is the quantity of moisture in the air high?

The velocity of sound in air at a particular temperature is . What will be its value when temperature is doubled and the pressure is halved?

Velocity of sound in a gaseous medium is . If the pressure is increased by times without causing a change in the temperature, the velocity of sound in the gas is:

What are the factors that affect the speed of sound in gases?

Select the correct relation out of the following.

If the temperature increases, then what happens to the frequency of the sound produced by the organ pipe?
