Surface Tension
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PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361310 A container of width \(2 a\) is filled with a liquid. A thin wire of mass per unit length \(\lambda\) is gently placed over the liquid surface in the middle of surface as shown. As a result the liquid surface is depressed by a distance \(y(y < < a)\). Determine the surface tension of the liquid.
supporting img

1 \(\frac{{\lambda ag}}{y}\)
2 \(\frac{{\lambda ag}}{{2y}}\)
3 \(\frac{{\lambda ag}}{{3y}}\)
4 \(\frac{{\lambda ag}}{{4y}}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361311 Surface tension is an atomic/molecular property of

1 Atoms in the interior
2 Atoms at the center
3 Atoms which are exterior
4 Atoms at surface bounded entirely by different atoms
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361312 A thin metal disc of radius \(r\) floats on water surface and bends the surface downwards along the perimeter making an angle \(\theta\) with vertical edge of the disc. If the disc displaces a weight of water \(W\) and surface tension of water is \(T\), then the weight of metal disc is

1 \(2 \pi r T+W\)
2 \(2 \pi r T \cos \theta-W\)
3 \(2 \pi r T \cos \theta+W\)
4 \(W-2 \pi r T \cos \theta\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361313 Assertion :
Sometimes insects can walk on water.
Reason :
The gravitational force on insect is balanced by force due to surface tension

1 Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.
3 Both Assertion and Reason are incorrect.
4 Assertion is incorrect but Reason is correct.
AIIMS - 2019
NEET DIGITAL LIBRARY
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361310 A container of width \(2 a\) is filled with a liquid. A thin wire of mass per unit length \(\lambda\) is gently placed over the liquid surface in the middle of surface as shown. As a result the liquid surface is depressed by a distance \(y(y < < a)\). Determine the surface tension of the liquid.
supporting img

1 \(\frac{{\lambda ag}}{y}\)
2 \(\frac{{\lambda ag}}{{2y}}\)
3 \(\frac{{\lambda ag}}{{3y}}\)
4 \(\frac{{\lambda ag}}{{4y}}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361311 Surface tension is an atomic/molecular property of

1 Atoms in the interior
2 Atoms at the center
3 Atoms which are exterior
4 Atoms at surface bounded entirely by different atoms
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361312 A thin metal disc of radius \(r\) floats on water surface and bends the surface downwards along the perimeter making an angle \(\theta\) with vertical edge of the disc. If the disc displaces a weight of water \(W\) and surface tension of water is \(T\), then the weight of metal disc is

1 \(2 \pi r T+W\)
2 \(2 \pi r T \cos \theta-W\)
3 \(2 \pi r T \cos \theta+W\)
4 \(W-2 \pi r T \cos \theta\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361313 Assertion :
Sometimes insects can walk on water.
Reason :
The gravitational force on insect is balanced by force due to surface tension

1 Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.
3 Both Assertion and Reason are incorrect.
4 Assertion is incorrect but Reason is correct.
AIIMS - 2019
Join With Us for More Updates
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361310 A container of width \(2 a\) is filled with a liquid. A thin wire of mass per unit length \(\lambda\) is gently placed over the liquid surface in the middle of surface as shown. As a result the liquid surface is depressed by a distance \(y(y < < a)\). Determine the surface tension of the liquid.
supporting img

1 \(\frac{{\lambda ag}}{y}\)
2 \(\frac{{\lambda ag}}{{2y}}\)
3 \(\frac{{\lambda ag}}{{3y}}\)
4 \(\frac{{\lambda ag}}{{4y}}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361311 Surface tension is an atomic/molecular property of

1 Atoms in the interior
2 Atoms at the center
3 Atoms which are exterior
4 Atoms at surface bounded entirely by different atoms
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361312 A thin metal disc of radius \(r\) floats on water surface and bends the surface downwards along the perimeter making an angle \(\theta\) with vertical edge of the disc. If the disc displaces a weight of water \(W\) and surface tension of water is \(T\), then the weight of metal disc is

1 \(2 \pi r T+W\)
2 \(2 \pi r T \cos \theta-W\)
3 \(2 \pi r T \cos \theta+W\)
4 \(W-2 \pi r T \cos \theta\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361313 Assertion :
Sometimes insects can walk on water.
Reason :
The gravitational force on insect is balanced by force due to surface tension

1 Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.
3 Both Assertion and Reason are incorrect.
4 Assertion is incorrect but Reason is correct.
AIIMS - 2019
For More Updates join with Us
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361310 A container of width \(2 a\) is filled with a liquid. A thin wire of mass per unit length \(\lambda\) is gently placed over the liquid surface in the middle of surface as shown. As a result the liquid surface is depressed by a distance \(y(y < < a)\). Determine the surface tension of the liquid.
supporting img

1 \(\frac{{\lambda ag}}{y}\)
2 \(\frac{{\lambda ag}}{{2y}}\)
3 \(\frac{{\lambda ag}}{{3y}}\)
4 \(\frac{{\lambda ag}}{{4y}}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361311 Surface tension is an atomic/molecular property of

1 Atoms in the interior
2 Atoms at the center
3 Atoms which are exterior
4 Atoms at surface bounded entirely by different atoms
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361312 A thin metal disc of radius \(r\) floats on water surface and bends the surface downwards along the perimeter making an angle \(\theta\) with vertical edge of the disc. If the disc displaces a weight of water \(W\) and surface tension of water is \(T\), then the weight of metal disc is

1 \(2 \pi r T+W\)
2 \(2 \pi r T \cos \theta-W\)
3 \(2 \pi r T \cos \theta+W\)
4 \(W-2 \pi r T \cos \theta\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361313 Assertion :
Sometimes insects can walk on water.
Reason :
The gravitational force on insect is balanced by force due to surface tension

1 Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.
3 Both Assertion and Reason are incorrect.
4 Assertion is incorrect but Reason is correct.
AIIMS - 2019
NEET DIGITAL LIBRARY