If the frequency of a sound wave is $n$ and its velocity is $v$,what will be the new velocity if the frequency is changed to $4n$?

The speed of sound in air at temperature $T$ and pressure $p$ is $v$. When the temperature is increased to $2 T$ and the pressure is reduced to $\frac{p}{2}$, then the speed is changed to

$A$ big explosion on the moon cannot be heard on the earth because

$A$ man sets his watch by the sound of a siren placed at a distance of $1 \,km$ away. If the velocity of sound is $330 \,m/s$,what is the status of his watch?

Oxygen is $16$ times heavier than hydrogen. Equal volumes of hydrogen and oxygen are mixed. The ratio of the speed of sound in the mixture to that in hydrogen is

What is called compression or condensation? Which type of changes in density and pressure take place in it?