Super Position of Longitudinal Waves
PHXI15:WAVES

355016 An open organ pipe of length \(l\) is sounded together with another open organ pipe of length \(l+x\) in their fundamental tones. Speed of sound in air is \(v\). The beat frequency heard will be \((x < < l)\) :

1 \(\dfrac{v x}{4 l^{2}}\)
2 \(\dfrac{v l^{2}}{2 x}\)
3 \(\dfrac{v x}{2 l^{2}}\)
4 \(\dfrac{v x^{2}}{2 l}\)
PHXI15:WAVES

355017 Two sitar strings A and B playing the note 'Dha' are slightly out of tune and produce beats of frequency \(5\;Hz\). The tension of the string \(B\) is slightly increased and the beat frequency is found to decrease by \(3\;Hz\). If the frequency of \(A\) is \(425\;Hz\), the original frequency of \(B\) is:

1 \(428\;Hz\)
2 \(430\;Hz\)
3 \(422\;Hz\)
4 \(420\;Hz\)
PHXI15:WAVES

355018 A tuning fork of frequency \(100\;Hz\) when sound together with another tuning fork of unknown frequency produces 2 beats per second. On loading the tuning fork with small amount of wax whose frequency is not known and sounded together with the same tuning fork produces one beat, per second then the frequency of the unknown tuning fork is

1 102
2 98
3 99
4 101
PHXI15:WAVES

355019 The wavelength of two waves are 50 and \(51{\rm{ }}cm\) respectively. If the temperature of the room is \(20^\circ C\) then what will be the number of beats produced per second by these waves, when the speed of sound at \(0^\circ C\) is \(332\;m{\rm{/}}s\)?

1 24
2 14
3 10
4 None of these
PHXI15:WAVES

355016 An open organ pipe of length \(l\) is sounded together with another open organ pipe of length \(l+x\) in their fundamental tones. Speed of sound in air is \(v\). The beat frequency heard will be \((x < < l)\) :

1 \(\dfrac{v x}{4 l^{2}}\)
2 \(\dfrac{v l^{2}}{2 x}\)
3 \(\dfrac{v x}{2 l^{2}}\)
4 \(\dfrac{v x^{2}}{2 l}\)
PHXI15:WAVES

355017 Two sitar strings A and B playing the note 'Dha' are slightly out of tune and produce beats of frequency \(5\;Hz\). The tension of the string \(B\) is slightly increased and the beat frequency is found to decrease by \(3\;Hz\). If the frequency of \(A\) is \(425\;Hz\), the original frequency of \(B\) is:

1 \(428\;Hz\)
2 \(430\;Hz\)
3 \(422\;Hz\)
4 \(420\;Hz\)
PHXI15:WAVES

355018 A tuning fork of frequency \(100\;Hz\) when sound together with another tuning fork of unknown frequency produces 2 beats per second. On loading the tuning fork with small amount of wax whose frequency is not known and sounded together with the same tuning fork produces one beat, per second then the frequency of the unknown tuning fork is

1 102
2 98
3 99
4 101
PHXI15:WAVES

355019 The wavelength of two waves are 50 and \(51{\rm{ }}cm\) respectively. If the temperature of the room is \(20^\circ C\) then what will be the number of beats produced per second by these waves, when the speed of sound at \(0^\circ C\) is \(332\;m{\rm{/}}s\)?

1 24
2 14
3 10
4 None of these
PHXI15:WAVES

355016 An open organ pipe of length \(l\) is sounded together with another open organ pipe of length \(l+x\) in their fundamental tones. Speed of sound in air is \(v\). The beat frequency heard will be \((x < < l)\) :

1 \(\dfrac{v x}{4 l^{2}}\)
2 \(\dfrac{v l^{2}}{2 x}\)
3 \(\dfrac{v x}{2 l^{2}}\)
4 \(\dfrac{v x^{2}}{2 l}\)
PHXI15:WAVES

355017 Two sitar strings A and B playing the note 'Dha' are slightly out of tune and produce beats of frequency \(5\;Hz\). The tension of the string \(B\) is slightly increased and the beat frequency is found to decrease by \(3\;Hz\). If the frequency of \(A\) is \(425\;Hz\), the original frequency of \(B\) is:

1 \(428\;Hz\)
2 \(430\;Hz\)
3 \(422\;Hz\)
4 \(420\;Hz\)
PHXI15:WAVES

355018 A tuning fork of frequency \(100\;Hz\) when sound together with another tuning fork of unknown frequency produces 2 beats per second. On loading the tuning fork with small amount of wax whose frequency is not known and sounded together with the same tuning fork produces one beat, per second then the frequency of the unknown tuning fork is

1 102
2 98
3 99
4 101
PHXI15:WAVES

355019 The wavelength of two waves are 50 and \(51{\rm{ }}cm\) respectively. If the temperature of the room is \(20^\circ C\) then what will be the number of beats produced per second by these waves, when the speed of sound at \(0^\circ C\) is \(332\;m{\rm{/}}s\)?

1 24
2 14
3 10
4 None of these
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXI15:WAVES

355016 An open organ pipe of length \(l\) is sounded together with another open organ pipe of length \(l+x\) in their fundamental tones. Speed of sound in air is \(v\). The beat frequency heard will be \((x < < l)\) :

1 \(\dfrac{v x}{4 l^{2}}\)
2 \(\dfrac{v l^{2}}{2 x}\)
3 \(\dfrac{v x}{2 l^{2}}\)
4 \(\dfrac{v x^{2}}{2 l}\)
PHXI15:WAVES

355017 Two sitar strings A and B playing the note 'Dha' are slightly out of tune and produce beats of frequency \(5\;Hz\). The tension of the string \(B\) is slightly increased and the beat frequency is found to decrease by \(3\;Hz\). If the frequency of \(A\) is \(425\;Hz\), the original frequency of \(B\) is:

1 \(428\;Hz\)
2 \(430\;Hz\)
3 \(422\;Hz\)
4 \(420\;Hz\)
PHXI15:WAVES

355018 A tuning fork of frequency \(100\;Hz\) when sound together with another tuning fork of unknown frequency produces 2 beats per second. On loading the tuning fork with small amount of wax whose frequency is not known and sounded together with the same tuning fork produces one beat, per second then the frequency of the unknown tuning fork is

1 102
2 98
3 99
4 101
PHXI15:WAVES

355019 The wavelength of two waves are 50 and \(51{\rm{ }}cm\) respectively. If the temperature of the room is \(20^\circ C\) then what will be the number of beats produced per second by these waves, when the speed of sound at \(0^\circ C\) is \(332\;m{\rm{/}}s\)?

1 24
2 14
3 10
4 None of these