Mansi Garg and Jitendra Kumar Solutions for Chapter: Sound, Exercise 4: CHALLENGERS

The ratio of the speed of sound in hydrogen to the speed of sound in oxygen at $1270 \mathrm{K}$ is.

Two waves x and y are taken such that the distance between their corresponding second and fifth crests of two waves are in the ratio $2:7$. The ratio of velocities of waves x and y are $3:1$. The wave that has a greater time period is.

The ratio of molecular weight of hydrogen to chlorine is $1:35$ at $300 \mathrm{K}$. The ratio of the speed of sound of hydrogen to chlorine at the same temperature is.

The phase difference between a particle at first crest and a particle at fourth crest is.

$40$ waves pass through a point in $0.5 \mathrm{s}$ at $0 °\mathrm{C}$. The distance between one compression and adjacent rarefaction is $8 \mathrm{m}$. The velocity of the sound wave is.

A tuning fork makes $400$ vibrations in two seconds in the air. If the velocity of sound at $0^0\mathrm{C}$ is $320 {\mathrm{ms}}^{-1}$. Then the wavelength of the wave emitted at ${27}^0\mathrm{C}$ is, 

The minimum distance between two particles in same phase is $18 \mathrm{cm}$. If the velocity of the wave is $36 {\mathrm{ms}}^{-1}$, then find the time interval after which-the particle undergoes a phase change of $\mathrm{\pi }$ is  

A sonar device on a submarine sends out a signal and receives an echo $5 \mathrm{s}$ later. The speed of sound in water, if the distance of the object from the submarine is $3625 \mathrm{m}$, is: