Chapter 12 – Fluid Mechanics, Surface Tension and Viscosity
Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 12 - Fluid Mechanics, Surface Tension and Viscosity
We have two different liquids A and B whose relative densities are 0.75 and 1.0, respectively. If we dip solid objects P and Q having relative densities 0.6 and 0.9 in these liquids, then:
12
Sep
We have two different liquids A and B whose relative densities are 0.75 and 1.0, respectively. If we dip solid objects P and Q having relative densities 0.6 and 0.9 in these liquids, then: respectively. If we dip solid objects P and Q having relative densities 0.6 and 0.9 in these liquids then We have [...]
A U -tube in which the cross – sectional area of the limb on the left is one quarter, the limb on the right contains mercury (density13.6 g/cm^3).The level of mercury in the narrow limb is at a distance of 36 cm from the upper end of the tube. What will be the rise in the level of mercury in the right limb if the left limb is filled to the top with water ?
12
Sep
A U -tube in which the cross – sectional area of the limb on the left is one quarter, the limb on the right contains mercury (density13.6 g/cm^3).The level of mercury in the narrow limb is at a distance of 36 cm from the upper end of the tube. What will be the rise in [...]
Water flows through a horizontal tube as shown in the figure. If the difference of heights of water column in the vertical tubes is h=0.02m, and the areas of cross section at A and B are 4×10^−4m^2 and 2×10^−4m^2, respectively, then the rate of flow of water across any section is
12
Sep
Water flows through a horizontal tube as shown in the figure. If the difference of heights of water column in the vertical tubes is h=0.02m, and the areas of cross section at A and B are 4×10^−4m^2 and 2×10^−4m^2, respectively, then the rate of flow of water across any section is and the areas of [...]
In the figure, the cross-sectional area of the smaller tube is a and that of the larger tube is 2a. A block of mass m is kept in the smaller tube having the same base area a, as that of the tube. The difference between water levels of the two tubes is
12
Sep
In the figure, the cross-sectional area of the smaller tube is a and that of the larger tube is 2a. A block of mass m is kept in the smaller tube having the same base area a, as that of the tube. The difference between water levels of the two tubes is as that of [...]
Three identical vessels A, B and C contain same quantity of liquid. In each vessel balls of different densities but same masses are placed. In vessel A, the ball is partly submerged; in vessel B, the ball is completely submerged but floating and in vessel C, the ball has sunk to the base. If FA, FB and FC are the total forces acting on the base of vessels A, B and C, respectively, then
12
Sep
Three identical vessels A, B and C contain same quantity of liquid. In each vessel balls of different densities but same masses are placed. In vessel A, the ball is partly submerged; in vessel B, the ball is completely submerged but floating and in vessel C, the ball has sunk to the base. If FA, [...]
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Chapter 12 - Fluid Mechanics, Surface Tension and Viscosity
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B and C contain same quantity of liquid. In each vessel balls of different densities but same masses are placed. In vessel A ,
b and c`. ,
FB and FC are the total forces acting on the base of vessels A ,
respectively ,
the ball has sunk to the base. If FA ,
the ball is completely submerged but floating and in vessel C ,
the ball is partly submerged; in vessel B ,
then ,
Three identical vessels A ,
The minimum horizontal acceleration of the container, so that the pressure at point A of the container becomes atmospheric is (the tank is of sufficient height) ?
12
Sep
The minimum horizontal acceleration of the container, so that the pressure at point A of the container becomes atmospheric is (the tank is of sufficient height) ? so that the pressure at point A of the container becomes atmospheric is (the tank is of sufficient height) ? The minimum horizontal acceleration of the container September [...]
A tank is filled up to a height 2H with a liquid and is placed on a platform of height H from the ground. The distance x from the ground where a small hole is punched to get the maximum range R is
12
Sep
A tank is filled up to a height 2H with a liquid and is placed on a platform of height H from the ground. The distance x from the ground where a small hole is punched to get the maximum range R is A tank is filled up to a height 2H with a liquid [...]
A solid uniform ball of volume V floats on the interface of two immiscible liquids (see the figure). The specific gravity of the upper liquid is ρ1 and that of lower one is ρ2 and the specific gravity of ball is ρ(ρ1
12
Sep
A solid uniform ball of volume V floats on the interface of two immiscible liquids (see the figure). The specific gravity of the upper liquid is ρ1 and that of lower one is ρ2 and the specific gravity of ball is ρ(ρ1 A spherical solid ball of volume V is made of a material of [...]
An ornament weighing 36 g in air weighs only 34 g in water. Assuming that some coppers is mixed with gold to prepare the ornament, find the amount of copper in it. Specific gravity of gold is 19.3 and that of copper is 8.9.
12
Sep
An ornament weighing 36 g in air weighs only 34 g in water. Assuming that some coppers is mixed with gold to prepare the ornament, find the amount of copper in it. Specific gravity of gold is 19.3 and that of copper is 8.9. An ornament weighing 36 g in air weighs only 34 g [...]
On heating water, bubbles being formed at the bottom of the vessel detach and rise. Take the bubbles to be spheres of radius R and making a circular contact of radius r with the bottom of the vessel. If r < < R, and the surface tension of water is T, value of r just before bubbles detach is: (density of water is ρw)
12
Sep
On heating water, bubbles being formed at the bottom of the vessel detach and rise. Take the bubbles to be spheres of radius R and making a circular contact of radius r with the bottom of the vessel. If r < < R, and the surface tension of water is T, value of r just [...]
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Cengage JEE Mains Physics by B.M Sharma
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Chapter 12 - Fluid Mechanics, Surface Tension and Viscosity
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and the surface tension of water is T ,
bubbles being formed at the bottom of the vessel detach and rise. Take the bubbles to be spheres of radius R and making a circular contact of radius r with the bottom of the vessel. If r < < R ,
On heating water ,
value of r just before bubbles detach is: (density of water is ρw) ,