172246
A massless rod is suspended by two identical strings $A B$ and $C D$ of equal length. A block of mass $m$ is suspended from point $O$ such that BO is equal to ' $x$ '. Further, it is observed that the frequency of 1st harmonic (fundamental frequency) in $\mathrm{AB}$ is equal to $2 \mathrm{nd}$ harmonic frequency in CD. Then, length of $\mathrm{BO}$ is
172250
An earthquake generates both transverse (S) and longitudinal $(P)$ sound waves in the earth. The speed of $S$ waves is about $4.5 \mathrm{~km} / \mathrm{s}$ and that of $P$ waves about $8.0 \mathrm{~km} / \mathrm{s}$.
A seismograph records $P$ and $S$ waves from an earthquake. The first $P$ wave arrives $4.0 \mathrm{~min}$. before the first $S$ wave. The epicenter of the earthquake is located at a distance of about :
172246
A massless rod is suspended by two identical strings $A B$ and $C D$ of equal length. A block of mass $m$ is suspended from point $O$ such that BO is equal to ' $x$ '. Further, it is observed that the frequency of 1st harmonic (fundamental frequency) in $\mathrm{AB}$ is equal to $2 \mathrm{nd}$ harmonic frequency in CD. Then, length of $\mathrm{BO}$ is
172250
An earthquake generates both transverse (S) and longitudinal $(P)$ sound waves in the earth. The speed of $S$ waves is about $4.5 \mathrm{~km} / \mathrm{s}$ and that of $P$ waves about $8.0 \mathrm{~km} / \mathrm{s}$.
A seismograph records $P$ and $S$ waves from an earthquake. The first $P$ wave arrives $4.0 \mathrm{~min}$. before the first $S$ wave. The epicenter of the earthquake is located at a distance of about :
172246
A massless rod is suspended by two identical strings $A B$ and $C D$ of equal length. A block of mass $m$ is suspended from point $O$ such that BO is equal to ' $x$ '. Further, it is observed that the frequency of 1st harmonic (fundamental frequency) in $\mathrm{AB}$ is equal to $2 \mathrm{nd}$ harmonic frequency in CD. Then, length of $\mathrm{BO}$ is
172250
An earthquake generates both transverse (S) and longitudinal $(P)$ sound waves in the earth. The speed of $S$ waves is about $4.5 \mathrm{~km} / \mathrm{s}$ and that of $P$ waves about $8.0 \mathrm{~km} / \mathrm{s}$.
A seismograph records $P$ and $S$ waves from an earthquake. The first $P$ wave arrives $4.0 \mathrm{~min}$. before the first $S$ wave. The epicenter of the earthquake is located at a distance of about :
172246
A massless rod is suspended by two identical strings $A B$ and $C D$ of equal length. A block of mass $m$ is suspended from point $O$ such that BO is equal to ' $x$ '. Further, it is observed that the frequency of 1st harmonic (fundamental frequency) in $\mathrm{AB}$ is equal to $2 \mathrm{nd}$ harmonic frequency in CD. Then, length of $\mathrm{BO}$ is
172250
An earthquake generates both transverse (S) and longitudinal $(P)$ sound waves in the earth. The speed of $S$ waves is about $4.5 \mathrm{~km} / \mathrm{s}$ and that of $P$ waves about $8.0 \mathrm{~km} / \mathrm{s}$.
A seismograph records $P$ and $S$ waves from an earthquake. The first $P$ wave arrives $4.0 \mathrm{~min}$. before the first $S$ wave. The epicenter of the earthquake is located at a distance of about :
172246
A massless rod is suspended by two identical strings $A B$ and $C D$ of equal length. A block of mass $m$ is suspended from point $O$ such that BO is equal to ' $x$ '. Further, it is observed that the frequency of 1st harmonic (fundamental frequency) in $\mathrm{AB}$ is equal to $2 \mathrm{nd}$ harmonic frequency in CD. Then, length of $\mathrm{BO}$ is
172250
An earthquake generates both transverse (S) and longitudinal $(P)$ sound waves in the earth. The speed of $S$ waves is about $4.5 \mathrm{~km} / \mathrm{s}$ and that of $P$ waves about $8.0 \mathrm{~km} / \mathrm{s}$.
A seismograph records $P$ and $S$ waves from an earthquake. The first $P$ wave arrives $4.0 \mathrm{~min}$. before the first $S$ wave. The epicenter of the earthquake is located at a distance of about :