A closed organ pipe and an open organ pipe have the same fundamental frequency. If the speed of sound in air is $v$, what is the ratio of their lengths?

A bomb explodes on the moon. How long will it take for the sound to reach the earth?

The ratio of densities of nitrogen and oxygen is $14:16$. The temperature at which the speed of sound in nitrogen will be same at that in oxygen at ${55^0}C$ is

The transverse displacement of string fixed at both ends is given by $y = 0.06\,\sin \left( {\frac{{2\pi x}}{3}} \right)\cos \left( {120\,\pi t} \right)$, where x and y are in metre and t is in second. The length of the string is 1.5m and its mass is $3 imes {10^{ - 2}}\,\,kg$ . The tension in the string is equal to

The loudness and pitch of a sound depends on

If sound wave travel from air to water, which of the following remain unchanged?

A man, standing between two cliffs, claps his hands and starts hearing a series of echoes at intervals of one second. If the speed of sound in air is $340\,\,m{s^{ - 1}}$, the distance between the cliffs is

At which temperature the speed of sound in hydrogen will be same as that of speed of sound in oxygen at $100^\circ \,C$

The phase difference between the two given waves is ${y_1} = {a_1}\sin \left( {\omega t - \frac{{2\pi }}{\lambda }X} \right)\,\,\,{y_2} = {a_2}\cos \left( {\omega t - \frac{{2\pi }}{\lambda }X + \phi } \right)\,$

In which medium does sound travel the fastest, generally?

A sound wave travels through air with a frequency of 500 Hz. If the air temperature increases, keeping other factors constant, the velocity of the sound wave will: