Volume 1

In a mixture of gases, the average number of degrees of freedom per molecule is 6. The rms speed of the molecules of the gas is c. The velocity of sound in the gas is In a mixture of gases the average number of degrees of freedom per molecule is 6. The rms speed of [...]

The intensity level of sound wave is said to be 4 decibel. If the intensity of wave is doubled, then the intensity level of sound, as expressed in decibel would be as expressed in decibel would be The intensity level of sound wave is said to be 4 decibel. If the intensity of wave is [...]

A person speaking normally produces a sound intensity of 40 dB at a distance of 1 m. If the threshold intensity for reasonable audibility is 20 dB, the maximum distance at which he can be heard clearly is. A person speaking normally produces a sound intensity of 40 dB at a distance of 1 m. [...]

The frequency of a sound wave is n and its velocity is v . If the frequency is increased to 4n, the velocity of the wave will be The frequency of a sound wave is n and its velocity is v . If the frequency is increased to 4n the velocity of the wave will [...]

When the temperature of an ideal gas is increased by 600 K, the velocity of the sound in the gas becomes root3 ​times the initial velocity in it . The initial temperature of the gas is at 300 K is? The ratio of the speed of sound in nitrogen gas to that in helium gas [...]

In a medium sound travels 2 km in 3 sec and in air, it travel 3 km in 10 sec . The ratio of the wavelengths of sound in the two media is In a medium sound travels 2 km in 3 sec and in air it travel 3 km in 10 sec . The [...]

The ratio of the speed of sound in nitrogen gas to that in helium gas, at 300 K is? at 300 K is? The ratio of the speed of sound in nitrogen gas to that in helium gas November 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 16 - Waves , Volume 1 [...]

Two strings of copper are stretched to the same tension. If their cross-section area are in the ratio 1 : 4 , then the respective wave velocities will be in the ratio then the respective wave velocities will be in the ratio Two strings of copper are stretched to the same tension. If their cross-section [...]

A sound is produced between two vertical parallel walls. the echo from one walls is heard after 2s while from the other 2s after the first echo. The speed of sound in the air is 340 m/s. A sound is produced between two vertical parallel walls. the echo from one walls is heard after 2s [...]

A pulse of sound wave travels a distance l in helium gas in time T at a particular temperature. If at the same temperature a pulse of sound wave is propagated in oxygen gas, it will cover the same distance l in time. A pulse of sound wave travels a distance l in helium gas [...]