172820 Consider the following statements:

172822 A person with vibrating tuning fork of frequency $338 \mathrm{~Hz}$ is moving towards a vertical wall with a speed of $2 \mathrm{~ms}^{-1}$. Velocity of sound in air is $340 \mathrm{~ms}^{-1}$. The number of beats heard by that person per second is :

172831 Two wires are fixed in a sonometer. Their tensions are in the ratio $8: 1$. The lengths are in the ratio $36: 35$. The diameters are in the ratio 4:1. Densities of the materials are in the ratio $1: 2$. If the higher frequency in the setting is 360 $\mathrm{Hz}$, the beat frequency when the two wires are sounded together is :

172835 Forty one tuning forks are arranged in increasing order of frequencies such that every fork gives 5 beats with the next. The last fork has a frequency that is double the frequency of the first fork. The frequency of the first fork is :

172820 Consider the following statements:

172822 A person with vibrating tuning fork of frequency $338 \mathrm{~Hz}$ is moving towards a vertical wall with a speed of $2 \mathrm{~ms}^{-1}$. Velocity of sound in air is $340 \mathrm{~ms}^{-1}$. The number of beats heard by that person per second is :

172831 Two wires are fixed in a sonometer. Their tensions are in the ratio $8: 1$. The lengths are in the ratio $36: 35$. The diameters are in the ratio 4:1. Densities of the materials are in the ratio $1: 2$. If the higher frequency in the setting is 360 $\mathrm{Hz}$, the beat frequency when the two wires are sounded together is :

172835 Forty one tuning forks are arranged in increasing order of frequencies such that every fork gives 5 beats with the next. The last fork has a frequency that is double the frequency of the first fork. The frequency of the first fork is :

172820 Consider the following statements:

172822 A person with vibrating tuning fork of frequency $338 \mathrm{~Hz}$ is moving towards a vertical wall with a speed of $2 \mathrm{~ms}^{-1}$. Velocity of sound in air is $340 \mathrm{~ms}^{-1}$. The number of beats heard by that person per second is :

172831 Two wires are fixed in a sonometer. Their tensions are in the ratio $8: 1$. The lengths are in the ratio $36: 35$. The diameters are in the ratio 4:1. Densities of the materials are in the ratio $1: 2$. If the higher frequency in the setting is 360 $\mathrm{Hz}$, the beat frequency when the two wires are sounded together is :

172835 Forty one tuning forks are arranged in increasing order of frequencies such that every fork gives 5 beats with the next. The last fork has a frequency that is double the frequency of the first fork. The frequency of the first fork is :

172820 Consider the following statements:

172822 A person with vibrating tuning fork of frequency $338 \mathrm{~Hz}$ is moving towards a vertical wall with a speed of $2 \mathrm{~ms}^{-1}$. Velocity of sound in air is $340 \mathrm{~ms}^{-1}$. The number of beats heard by that person per second is :

172831 Two wires are fixed in a sonometer. Their tensions are in the ratio $8: 1$. The lengths are in the ratio $36: 35$. The diameters are in the ratio 4:1. Densities of the materials are in the ratio $1: 2$. If the higher frequency in the setting is 360 $\mathrm{Hz}$, the beat frequency when the two wires are sounded together is :

172835 Forty one tuning forks are arranged in increasing order of frequencies such that every fork gives 5 beats with the next. The last fork has a frequency that is double the frequency of the first fork. The frequency of the first fork is :