354787
A source of sound \({S}\) and a detector \({D}\) are placed at some distance from one another. A big cardboard is placed near the detector and perpendicular to the line \({S D}\) as shown in figure. It is gradually moved away and it is found that the intensity changes from a maximum to a minimum as the board is moved through a distance of \(20\,cm\). Find the frequency of the sound emitted is Velocity of sound in air is \({336 {~m} / {s}}\).
354788 A point source of sound is located somewhere along the \(x\)-axis. Experiments show that the same wave front simultaneously reaches listeners at \(x=-8 {~m}\) and \(x=+2.0 {~m}\). A third listener is positioned along the positive \(y\)-axis. What is her \(y\)-coordinate (in \(m\) ) if the same wave front reaches her at the same instant as it does the first two listeners?
354790
Assertion :
Resonance is a special case of forced vibration in which the nature and frequency of vibration of the body is the same as the impressed frequency and the amplitude of forced vibration is maximum.
Reason :
The amplitude of forced vibrations of a body, increases with an increase in the frequency of the externally impressed periodic force.
354787
A source of sound \({S}\) and a detector \({D}\) are placed at some distance from one another. A big cardboard is placed near the detector and perpendicular to the line \({S D}\) as shown in figure. It is gradually moved away and it is found that the intensity changes from a maximum to a minimum as the board is moved through a distance of \(20\,cm\). Find the frequency of the sound emitted is Velocity of sound in air is \({336 {~m} / {s}}\).
354788 A point source of sound is located somewhere along the \(x\)-axis. Experiments show that the same wave front simultaneously reaches listeners at \(x=-8 {~m}\) and \(x=+2.0 {~m}\). A third listener is positioned along the positive \(y\)-axis. What is her \(y\)-coordinate (in \(m\) ) if the same wave front reaches her at the same instant as it does the first two listeners?
354790
Assertion :
Resonance is a special case of forced vibration in which the nature and frequency of vibration of the body is the same as the impressed frequency and the amplitude of forced vibration is maximum.
Reason :
The amplitude of forced vibrations of a body, increases with an increase in the frequency of the externally impressed periodic force.
354787
A source of sound \({S}\) and a detector \({D}\) are placed at some distance from one another. A big cardboard is placed near the detector and perpendicular to the line \({S D}\) as shown in figure. It is gradually moved away and it is found that the intensity changes from a maximum to a minimum as the board is moved through a distance of \(20\,cm\). Find the frequency of the sound emitted is Velocity of sound in air is \({336 {~m} / {s}}\).
354788 A point source of sound is located somewhere along the \(x\)-axis. Experiments show that the same wave front simultaneously reaches listeners at \(x=-8 {~m}\) and \(x=+2.0 {~m}\). A third listener is positioned along the positive \(y\)-axis. What is her \(y\)-coordinate (in \(m\) ) if the same wave front reaches her at the same instant as it does the first two listeners?
354790
Assertion :
Resonance is a special case of forced vibration in which the nature and frequency of vibration of the body is the same as the impressed frequency and the amplitude of forced vibration is maximum.
Reason :
The amplitude of forced vibrations of a body, increases with an increase in the frequency of the externally impressed periodic force.
354787
A source of sound \({S}\) and a detector \({D}\) are placed at some distance from one another. A big cardboard is placed near the detector and perpendicular to the line \({S D}\) as shown in figure. It is gradually moved away and it is found that the intensity changes from a maximum to a minimum as the board is moved through a distance of \(20\,cm\). Find the frequency of the sound emitted is Velocity of sound in air is \({336 {~m} / {s}}\).
354788 A point source of sound is located somewhere along the \(x\)-axis. Experiments show that the same wave front simultaneously reaches listeners at \(x=-8 {~m}\) and \(x=+2.0 {~m}\). A third listener is positioned along the positive \(y\)-axis. What is her \(y\)-coordinate (in \(m\) ) if the same wave front reaches her at the same instant as it does the first two listeners?
354790
Assertion :
Resonance is a special case of forced vibration in which the nature and frequency of vibration of the body is the same as the impressed frequency and the amplitude of forced vibration is maximum.
Reason :
The amplitude of forced vibrations of a body, increases with an increase in the frequency of the externally impressed periodic force.
354787
A source of sound \({S}\) and a detector \({D}\) are placed at some distance from one another. A big cardboard is placed near the detector and perpendicular to the line \({S D}\) as shown in figure. It is gradually moved away and it is found that the intensity changes from a maximum to a minimum as the board is moved through a distance of \(20\,cm\). Find the frequency of the sound emitted is Velocity of sound in air is \({336 {~m} / {s}}\).
354788 A point source of sound is located somewhere along the \(x\)-axis. Experiments show that the same wave front simultaneously reaches listeners at \(x=-8 {~m}\) and \(x=+2.0 {~m}\). A third listener is positioned along the positive \(y\)-axis. What is her \(y\)-coordinate (in \(m\) ) if the same wave front reaches her at the same instant as it does the first two listeners?
354790
Assertion :
Resonance is a special case of forced vibration in which the nature and frequency of vibration of the body is the same as the impressed frequency and the amplitude of forced vibration is maximum.
Reason :
The amplitude of forced vibrations of a body, increases with an increase in the frequency of the externally impressed periodic force.