FOR DIFFERENT COMPETITIVE EXAMINATIONS

The temperature at which the speed of sound in air becomes double of its value at $27°C$ is:

If the volume elasticity of freshwater and seawater be the same, then, for, the speed of sound to be the same in freshwater and in seawater :

The speed of a sound wave of frequency $150 Hz$ is $v$ at a place. The speed of another sound wave of frequency $300 Hz$ at the same place will be :

Infrasonic, audible and ultrasonic sound waves travel through a medium with speed $v_i , v_a$ and $v_u$ respectively. Then :

A source of sound of frequency $600 Hz$ is placed inside water. The speed of sound in water is $1500 \mathrm{m}/\mathrm{s}$ and in air is $300 \mathrm{m}/\mathrm{s}$. The frequency of sound detected in air is :

Approximate location of earthquakes can be determined by :

Supersonic planes fly :

When an object moves with supersonic speed, the ratio of the speed of the object to the speed of sound is called :