172719 Two sitar strings $A$ and $B$ playing the note "Ga'. are slightly out of tune and produce beats of frequency $6 \mathrm{~Hz}$. Then tension in the string $A$ is slightly reduced and the beat frequency is found to reduce to $3 \mathrm{~Hz}$. If the original frequency of $A$ is $324 \mathrm{~Hz}$, the frequency of $B$ is.

172721 At what temperature does the velocity of sound in air increases by $10 \%$ in comparison with velocity at $0^{\circ} \mathrm{C}$ ?

172722 Twenty-five tuning forks are arranged in series in the order of decreasing frequency, Any two successive forks produce 3 beats per second. If the frequency of the first tuning fork is the octave of the last fork. Frequency of the $21^{\text {st }}$ fork is,

172723 The speed of the sound in Oxygen $\left(\mathrm{O}_{2}\right)$ at a certain temperature is $460 \mathrm{~m} . \mathrm{s}^{-1}$. The speed of the sound in Helium (He) at the same temperature will be - (assume both the gasses to be ideal)

172719 Two sitar strings $A$ and $B$ playing the note "Ga'. are slightly out of tune and produce beats of frequency $6 \mathrm{~Hz}$. Then tension in the string $A$ is slightly reduced and the beat frequency is found to reduce to $3 \mathrm{~Hz}$. If the original frequency of $A$ is $324 \mathrm{~Hz}$, the frequency of $B$ is.

172721 At what temperature does the velocity of sound in air increases by $10 \%$ in comparison with velocity at $0^{\circ} \mathrm{C}$ ?

172722 Twenty-five tuning forks are arranged in series in the order of decreasing frequency, Any two successive forks produce 3 beats per second. If the frequency of the first tuning fork is the octave of the last fork. Frequency of the $21^{\text {st }}$ fork is,

172723 The speed of the sound in Oxygen $\left(\mathrm{O}_{2}\right)$ at a certain temperature is $460 \mathrm{~m} . \mathrm{s}^{-1}$. The speed of the sound in Helium (He) at the same temperature will be - (assume both the gasses to be ideal)

172719 Two sitar strings $A$ and $B$ playing the note "Ga'. are slightly out of tune and produce beats of frequency $6 \mathrm{~Hz}$. Then tension in the string $A$ is slightly reduced and the beat frequency is found to reduce to $3 \mathrm{~Hz}$. If the original frequency of $A$ is $324 \mathrm{~Hz}$, the frequency of $B$ is.

172721 At what temperature does the velocity of sound in air increases by $10 \%$ in comparison with velocity at $0^{\circ} \mathrm{C}$ ?

172722 Twenty-five tuning forks are arranged in series in the order of decreasing frequency, Any two successive forks produce 3 beats per second. If the frequency of the first tuning fork is the octave of the last fork. Frequency of the $21^{\text {st }}$ fork is,

172723 The speed of the sound in Oxygen $\left(\mathrm{O}_{2}\right)$ at a certain temperature is $460 \mathrm{~m} . \mathrm{s}^{-1}$. The speed of the sound in Helium (He) at the same temperature will be - (assume both the gasses to be ideal)

172719 Two sitar strings $A$ and $B$ playing the note "Ga'. are slightly out of tune and produce beats of frequency $6 \mathrm{~Hz}$. Then tension in the string $A$ is slightly reduced and the beat frequency is found to reduce to $3 \mathrm{~Hz}$. If the original frequency of $A$ is $324 \mathrm{~Hz}$, the frequency of $B$ is.

172721 At what temperature does the velocity of sound in air increases by $10 \%$ in comparison with velocity at $0^{\circ} \mathrm{C}$ ?

172722 Twenty-five tuning forks are arranged in series in the order of decreasing frequency, Any two successive forks produce 3 beats per second. If the frequency of the first tuning fork is the octave of the last fork. Frequency of the $21^{\text {st }}$ fork is,

172723 The speed of the sound in Oxygen $\left(\mathrm{O}_{2}\right)$ at a certain temperature is $460 \mathrm{~m} . \mathrm{s}^{-1}$. The speed of the sound in Helium (He) at the same temperature will be - (assume both the gasses to be ideal)