Surface Tension
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361173 Read the Statement - A and Statement - B carefully to mark the correct options given below.
Statement A :
The contact angle between a solid and a liquid is a property of the material of the solid and liquid as well.
Statement B :
The rise of a liquid in a capillary tube does not depend on the inner radius of the tube.

1 Statement A is correct but statement B is incorrect.
2 Statement A is incorrect but statement B is correct.
3 Both statements are correct .
4 Both statements are incorrect.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361174 Figure shows a capillary tube of radius \(r\) dipped into water. If the atmospheric pressure is \(P_{a t m}\), the pressure at point \(A\) (just below the meniscus) is (where \(S\) is surface tension)
supporting img

1 \(P_{a t m}\)
2 \(P_{a t m}+\dfrac{2 S}{r}\)
3 \(P_{a t m}-\dfrac{2 S}{r}\)
4 \(P_{a t m}-\dfrac{4 S}{r}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361175 Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by \(75 \times {10^{ - 4}}\;N\) force due to the weight of the liquid. If the surface tension of water is \(6 \times {10^{ - 2}}\;N/m\), the inner circumference of the capillary must be

1 \(1.25 \times {10^{ - 2}}\;m\)
2 \(0.50 \times {10^{ - 2}}\;m\)
3 \(6.50 \times {10^{ - 2}}\;m\)
4 \(12.50 \times {10^{ - 2}}\;m\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361176 A \(20\;\,cm\) long capillary tube is dipped in water. The water rises upto \(8\;cm\). If the entire arrangement is put in a freely falling elevator, the length of water column in the capillary tube will be

1 \(20\,\;cm\)
2 \(4\;\,cm\)
3 \(10\,\;cm\)
4 \(8\;\,cm\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361173 Read the Statement - A and Statement - B carefully to mark the correct options given below.
Statement A :
The contact angle between a solid and a liquid is a property of the material of the solid and liquid as well.
Statement B :
The rise of a liquid in a capillary tube does not depend on the inner radius of the tube.

1 Statement A is correct but statement B is incorrect.
2 Statement A is incorrect but statement B is correct.
3 Both statements are correct .
4 Both statements are incorrect.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361174 Figure shows a capillary tube of radius \(r\) dipped into water. If the atmospheric pressure is \(P_{a t m}\), the pressure at point \(A\) (just below the meniscus) is (where \(S\) is surface tension)
supporting img

1 \(P_{a t m}\)
2 \(P_{a t m}+\dfrac{2 S}{r}\)
3 \(P_{a t m}-\dfrac{2 S}{r}\)
4 \(P_{a t m}-\dfrac{4 S}{r}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361175 Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by \(75 \times {10^{ - 4}}\;N\) force due to the weight of the liquid. If the surface tension of water is \(6 \times {10^{ - 2}}\;N/m\), the inner circumference of the capillary must be

1 \(1.25 \times {10^{ - 2}}\;m\)
2 \(0.50 \times {10^{ - 2}}\;m\)
3 \(6.50 \times {10^{ - 2}}\;m\)
4 \(12.50 \times {10^{ - 2}}\;m\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361176 A \(20\;\,cm\) long capillary tube is dipped in water. The water rises upto \(8\;cm\). If the entire arrangement is put in a freely falling elevator, the length of water column in the capillary tube will be

1 \(20\,\;cm\)
2 \(4\;\,cm\)
3 \(10\,\;cm\)
4 \(8\;\,cm\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361173 Read the Statement - A and Statement - B carefully to mark the correct options given below.
Statement A :
The contact angle between a solid and a liquid is a property of the material of the solid and liquid as well.
Statement B :
The rise of a liquid in a capillary tube does not depend on the inner radius of the tube.

1 Statement A is correct but statement B is incorrect.
2 Statement A is incorrect but statement B is correct.
3 Both statements are correct .
4 Both statements are incorrect.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361174 Figure shows a capillary tube of radius \(r\) dipped into water. If the atmospheric pressure is \(P_{a t m}\), the pressure at point \(A\) (just below the meniscus) is (where \(S\) is surface tension)
supporting img

1 \(P_{a t m}\)
2 \(P_{a t m}+\dfrac{2 S}{r}\)
3 \(P_{a t m}-\dfrac{2 S}{r}\)
4 \(P_{a t m}-\dfrac{4 S}{r}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361175 Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by \(75 \times {10^{ - 4}}\;N\) force due to the weight of the liquid. If the surface tension of water is \(6 \times {10^{ - 2}}\;N/m\), the inner circumference of the capillary must be

1 \(1.25 \times {10^{ - 2}}\;m\)
2 \(0.50 \times {10^{ - 2}}\;m\)
3 \(6.50 \times {10^{ - 2}}\;m\)
4 \(12.50 \times {10^{ - 2}}\;m\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361176 A \(20\;\,cm\) long capillary tube is dipped in water. The water rises upto \(8\;cm\). If the entire arrangement is put in a freely falling elevator, the length of water column in the capillary tube will be

1 \(20\,\;cm\)
2 \(4\;\,cm\)
3 \(10\,\;cm\)
4 \(8\;\,cm\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361173 Read the Statement - A and Statement - B carefully to mark the correct options given below.
Statement A :
The contact angle between a solid and a liquid is a property of the material of the solid and liquid as well.
Statement B :
The rise of a liquid in a capillary tube does not depend on the inner radius of the tube.

1 Statement A is correct but statement B is incorrect.
2 Statement A is incorrect but statement B is correct.
3 Both statements are correct .
4 Both statements are incorrect.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361174 Figure shows a capillary tube of radius \(r\) dipped into water. If the atmospheric pressure is \(P_{a t m}\), the pressure at point \(A\) (just below the meniscus) is (where \(S\) is surface tension)
supporting img

1 \(P_{a t m}\)
2 \(P_{a t m}+\dfrac{2 S}{r}\)
3 \(P_{a t m}-\dfrac{2 S}{r}\)
4 \(P_{a t m}-\dfrac{4 S}{r}\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361175 Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by \(75 \times {10^{ - 4}}\;N\) force due to the weight of the liquid. If the surface tension of water is \(6 \times {10^{ - 2}}\;N/m\), the inner circumference of the capillary must be

1 \(1.25 \times {10^{ - 2}}\;m\)
2 \(0.50 \times {10^{ - 2}}\;m\)
3 \(6.50 \times {10^{ - 2}}\;m\)
4 \(12.50 \times {10^{ - 2}}\;m\)
PHXI10:MECHANICAL PROPERTIES OF FLUIDS

361176 A \(20\;\,cm\) long capillary tube is dipped in water. The water rises upto \(8\;cm\). If the entire arrangement is put in a freely falling elevator, the length of water column in the capillary tube will be

1 \(20\,\;cm\)
2 \(4\;\,cm\)
3 \(10\,\;cm\)
4 \(8\;\,cm\)