Physics
Fluid-Mechanics
Easy
Question
Consider a liquid contained in a vessel. The liquid solid adhesive force is very weak as compared to the cohesive force in the liquid. The shape of the liquid surface near the solid shall be
- Horizontal
- Almost vertical
- Concave
- Convex
The correct answer is: Convex
Related Questions to study
Physics
On mixing the salt in water, the surface tension of water will
On mixing the salt in water, the surface tension of water will
PhysicsFluid-Mechanics
Physics
If two glass plates are quite nearer to each other in water, then there will be force of
If two glass plates are quite nearer to each other in water, then there will be force of
PhysicsFluid-Mechanics
Physics
The surface tension of a liquid
The surface tension of a liquid
PhysicsFluid-Mechanics
Physics
The property of surface tension is obtained in
The property of surface tension is obtained in
PhysicsFluid-Mechanics
Physics
Bernoulli's equation can be written in the following different forms (Column I). Column II lists certain units each of which pertains to one of the possible forms of the equation Match the unit associated with each of the equations.
Column I
Column II
(i) 
constant
(a) Total energy per unit mass
(ii) 
constant
(b) Total energy per unit weight
(iii) 
constant
(c) Total energy per unit volume
|
Column I |
Column II |
| (i) constant |
(a) Total energy per unit mass |
| (ii) constant |
(b) Total energy per unit weight |
| (iii) constant |
(c) Total energy per unit volume |
Bernoulli's equation can be written in the following different forms (Column I). Column II lists certain units each of which pertains to one of the possible forms of the equation Match the unit associated with each of the equations.
Column I
Column II
(i) constant
(a) Total energy per unit mass
(ii) constant
(b) Total energy per unit weight
(iii) constant
(c) Total energy per unit volume
|
Column I |
Column II |
| (i) constant |
(a) Total energy per unit mass |
| (ii) constant |
(b) Total energy per unit weight |
| (iii) constant |
(c) Total energy per unit volume |
PhysicsFluid-Mechanics
Physics
A cylinder of weight W is floating in two liquids as shown in figure. Net force on cylinder from top is F1 and force on cylinder from the bottom is F2. Match the following two columns.
Column I
Column II
(i) Net force on cylinder liquid -1
(a) Zero
(ii) 
(b) W
(iii) Net force on cylinder from liquid -2
(c) Net upthrust
(iv) Net force on cylinder from atmosphere
(d) None of these
|
Column I |
Column II |
| (i) Net force on cylinder liquid -1 |
(a) Zero |
| (ii) |
(b) W |
| (iii) Net force on cylinder from liquid -2 |
(c) Net upthrust |
| (iv) Net force on cylinder from atmosphere |
(d) None of these |
A cylinder of weight W is floating in two liquids as shown in figure. Net force on cylinder from top is F1 and force on cylinder from the bottom is F2. Match the following two columns.
Column I
Column II
(i) Net force on cylinder liquid -1
(a) Zero
(ii)
(b) W
(iii) Net force on cylinder from liquid -2
(c) Net upthrust
(iv) Net force on cylinder from atmosphere
(d) None of these
|
Column I |
Column II |
| (i) Net force on cylinder liquid -1 |
(a) Zero |
| (ii) |
(b) W |
| (iii) Net force on cylinder from liquid -2 |
(c) Net upthrust |
| (iv) Net force on cylinder from atmosphere |
(d) None of these |
PhysicsFluid-Mechanics
Physics
The vessel shown in the figure contains water,
For this arrangement, answer the following questions:
The net force acting on the base of the vessel is
The vessel shown in the figure contains water, For this arrangement, answer the following questions:
The net force acting on the base of the vessel is
PhysicsFluid-Mechanics
Physics
The gauge pressure in the main water pipe is 400 KPa. Tue work done to pump water At a gauge pressure of 100 KPa is 
. Then volume of water pumped is
The gauge pressure in the main water pipe is 400 KPa. Tue work done to pump water At a gauge pressure of 100 KPa is . Then volume of water pumped is
PhysicsFluid-Mechanics
Physics
In a horizontal pipe line of uniform cross section as pressure falls between two points separated by certain distance, the change in the kinetic energy of the oil flowing between these two points is 
and density of the oil is 
. Then the fall in pressure between those two points is
In a horizontal pipe line of uniform cross section as pressure falls between two points separated by certain distance, the change in the kinetic energy of the oil flowing between these two points is and density of the oil is . Then the fall in pressure between those two points is
PhysicsFluid-Mechanics
Physics
If a liquid enters a section of tube of radius 5 cm with a velocity l6 ms-1, the velocity with which it leaves another section of the tube of radius 4 cm (assuming the tube horizontal)
If a liquid enters a section of tube of radius 5 cm with a velocity l6 ms-1, the velocity with which it leaves another section of the tube of radius 4 cm (assuming the tube horizontal)
PhysicsFluid-Mechanics
Physics
A garden hose having an internal diameter of 2cm is connected to a lawn sprinkler with 20 holes, each 0.2 cm in diameter. If the water in the hose has a speed of 
, the speed with which it leaves the sprinkler holes is
A garden hose having an internal diameter of 2cm is connected to a lawn sprinkler with 20 holes, each 0.2 cm in diameter. If the water in the hose has a speed of , the speed with which it leaves the sprinkler holes is
PhysicsFluid-Mechanics
Physics
The level of water in a vessel falls from a height 36 cm to 16 cm in 6 minutes as water flows out through a hole in its bottom. At the end of next 3 minutes, the height of water level in the vessel will be
The level of water in a vessel falls from a height 36 cm to 16 cm in 6 minutes as water flows out through a hole in its bottom. At the end of next 3 minutes, the height of water level in the vessel will be
PhysicsFluid-Mechanics
Physics
A water tank has a small orifice of area 1 mm2 in its vertical side. It is 5 m below the surface level of water. If g=10 ms-2, the volume of water escaping from the orifice in one second
A water tank has a small orifice of area 1 mm2 in its vertical side. It is 5 m below the surface level of water. If g=10 ms-2, the volume of water escaping from the orifice in one second
PhysicsFluid-Mechanics
Physics
In an experiment, the pressure on the top surface of an aeroplane wing is 
and that on the bottom surface is 
. If the area of eat surface is 
, the lift force on the wing is
In an experiment, the pressure on the top surface of an aeroplane wing is and that on the bottom surface is . If the area of eat surface is , the lift force on the wing is
PhysicsFluid-Mechanics
Physics
A liquid of density 800 Kg m-3 is filled in a large vessel open at the top. The total pressure at the bottom of the vessel is 1.6 atm. If a hole is made at the bottom of the tank, the velocity of efflux through the hole is 
.
A liquid of density 800 Kg m-3 is filled in a large vessel open at the top. The total pressure at the bottom of the vessel is 1.6 atm. If a hole is made at the bottom of the tank, the velocity of efflux through the hole is .
PhysicsFluid-Mechanics
