02. Capillary and Angle of Contact
Mechanical Properties of Fluids

142996 A glass capillary tube of inner diameter 0.28 $\mathrm{mm}$ is lowered vertically into water in a vessel. The pressure to be applied on the water in the capillary tube so that water level in the tube is same as that in the vessel (in $\mathrm{Nm}^{-2}$ ) is (Surface tension of water $=0.07 \mathrm{Nm}^{-1}$ )
Atmospheric pressure $=10^{5} \mathrm{Nm}^{-2}$

1 $10^{3}$
2 $99 \times 10^{3}$
3 $100 \times 10^{3}$
4 $101 \times 10^{3}$
Mechanical Properties of Fluids

142998 In a capillary tube, water rises to $3 \mathrm{~mm}$ the height of water that will rise in another capillary tube having one-third radius of the first is

1 $1 \mathrm{~mm}$
2 $3 \mathrm{~mm}$
3 $6 \mathrm{~mm}$
4 $9 \mathrm{~mm}$
Mechanical Properties of Fluids

143000 Water rises upto height ' $h$ ' in a capillary tube on the surface of the earth. The value of ' $h$ ' will increase if the experimental setup is kept in $g=$ acceleration due to gravity

1 a lift going upward with a certain acceleration
2 accelerating train
3 a satellite rotating close to earth
4 a lift going down with acceleration a $ \lt \mathrm{g}$
Mechanical Properties of Fluids

143001 Water rises to a height of $15 \mathrm{~mm}$ in a capillary tube having cross-sectional area ' $A$ '. If crosssectional area of the tube is made $\frac{{ }^{\prime} \mathrm{A}}{3}$ then the water will rise to a height of

1 $5 \sqrt{2} \times 10^{-3} \mathrm{~m}$
2 $20 \sqrt{3} \times 10^{-3} \mathrm{~m}$
3 $10 \sqrt{3} \times 10^{-3} \mathrm{~m}$
4 $15 \sqrt{3} \times 10^{-3} \mathrm{~m}$
Mechanical Properties of Fluids

142996 A glass capillary tube of inner diameter 0.28 $\mathrm{mm}$ is lowered vertically into water in a vessel. The pressure to be applied on the water in the capillary tube so that water level in the tube is same as that in the vessel (in $\mathrm{Nm}^{-2}$ ) is (Surface tension of water $=0.07 \mathrm{Nm}^{-1}$ )
Atmospheric pressure $=10^{5} \mathrm{Nm}^{-2}$

1 $10^{3}$
2 $99 \times 10^{3}$
3 $100 \times 10^{3}$
4 $101 \times 10^{3}$
Mechanical Properties of Fluids

142998 In a capillary tube, water rises to $3 \mathrm{~mm}$ the height of water that will rise in another capillary tube having one-third radius of the first is

1 $1 \mathrm{~mm}$
2 $3 \mathrm{~mm}$
3 $6 \mathrm{~mm}$
4 $9 \mathrm{~mm}$
Mechanical Properties of Fluids

143000 Water rises upto height ' $h$ ' in a capillary tube on the surface of the earth. The value of ' $h$ ' will increase if the experimental setup is kept in $g=$ acceleration due to gravity

1 a lift going upward with a certain acceleration
2 accelerating train
3 a satellite rotating close to earth
4 a lift going down with acceleration a $ \lt \mathrm{g}$
Mechanical Properties of Fluids

143001 Water rises to a height of $15 \mathrm{~mm}$ in a capillary tube having cross-sectional area ' $A$ '. If crosssectional area of the tube is made $\frac{{ }^{\prime} \mathrm{A}}{3}$ then the water will rise to a height of

1 $5 \sqrt{2} \times 10^{-3} \mathrm{~m}$
2 $20 \sqrt{3} \times 10^{-3} \mathrm{~m}$
3 $10 \sqrt{3} \times 10^{-3} \mathrm{~m}$
4 $15 \sqrt{3} \times 10^{-3} \mathrm{~m}$
Mechanical Properties of Fluids

142996 A glass capillary tube of inner diameter 0.28 $\mathrm{mm}$ is lowered vertically into water in a vessel. The pressure to be applied on the water in the capillary tube so that water level in the tube is same as that in the vessel (in $\mathrm{Nm}^{-2}$ ) is (Surface tension of water $=0.07 \mathrm{Nm}^{-1}$ )
Atmospheric pressure $=10^{5} \mathrm{Nm}^{-2}$

1 $10^{3}$
2 $99 \times 10^{3}$
3 $100 \times 10^{3}$
4 $101 \times 10^{3}$
Mechanical Properties of Fluids

142998 In a capillary tube, water rises to $3 \mathrm{~mm}$ the height of water that will rise in another capillary tube having one-third radius of the first is

1 $1 \mathrm{~mm}$
2 $3 \mathrm{~mm}$
3 $6 \mathrm{~mm}$
4 $9 \mathrm{~mm}$
Mechanical Properties of Fluids

143000 Water rises upto height ' $h$ ' in a capillary tube on the surface of the earth. The value of ' $h$ ' will increase if the experimental setup is kept in $g=$ acceleration due to gravity

1 a lift going upward with a certain acceleration
2 accelerating train
3 a satellite rotating close to earth
4 a lift going down with acceleration a $ \lt \mathrm{g}$
Mechanical Properties of Fluids

143001 Water rises to a height of $15 \mathrm{~mm}$ in a capillary tube having cross-sectional area ' $A$ '. If crosssectional area of the tube is made $\frac{{ }^{\prime} \mathrm{A}}{3}$ then the water will rise to a height of

1 $5 \sqrt{2} \times 10^{-3} \mathrm{~m}$
2 $20 \sqrt{3} \times 10^{-3} \mathrm{~m}$
3 $10 \sqrt{3} \times 10^{-3} \mathrm{~m}$
4 $15 \sqrt{3} \times 10^{-3} \mathrm{~m}$
Mechanical Properties of Fluids

142996 A glass capillary tube of inner diameter 0.28 $\mathrm{mm}$ is lowered vertically into water in a vessel. The pressure to be applied on the water in the capillary tube so that water level in the tube is same as that in the vessel (in $\mathrm{Nm}^{-2}$ ) is (Surface tension of water $=0.07 \mathrm{Nm}^{-1}$ )
Atmospheric pressure $=10^{5} \mathrm{Nm}^{-2}$

1 $10^{3}$
2 $99 \times 10^{3}$
3 $100 \times 10^{3}$
4 $101 \times 10^{3}$
Mechanical Properties of Fluids

142998 In a capillary tube, water rises to $3 \mathrm{~mm}$ the height of water that will rise in another capillary tube having one-third radius of the first is

1 $1 \mathrm{~mm}$
2 $3 \mathrm{~mm}$
3 $6 \mathrm{~mm}$
4 $9 \mathrm{~mm}$
Mechanical Properties of Fluids

143000 Water rises upto height ' $h$ ' in a capillary tube on the surface of the earth. The value of ' $h$ ' will increase if the experimental setup is kept in $g=$ acceleration due to gravity

1 a lift going upward with a certain acceleration
2 accelerating train
3 a satellite rotating close to earth
4 a lift going down with acceleration a $ \lt \mathrm{g}$
Mechanical Properties of Fluids

143001 Water rises to a height of $15 \mathrm{~mm}$ in a capillary tube having cross-sectional area ' $A$ '. If crosssectional area of the tube is made $\frac{{ }^{\prime} \mathrm{A}}{3}$ then the water will rise to a height of

1 $5 \sqrt{2} \times 10^{-3} \mathrm{~m}$
2 $20 \sqrt{3} \times 10^{-3} \mathrm{~m}$
3 $10 \sqrt{3} \times 10^{-3} \mathrm{~m}$
4 $15 \sqrt{3} \times 10^{-3} \mathrm{~m}$