Advertisements
Advertisements
प्रश्न
A beaker containing a liquid is kept inside a big closed jar. If the air inside the jar is continuously pumped out, the pressure in the liquid near the bottom of the liquid will
पर्याय
increase
decrease
remain constant
first decrease and then increase
Advertisements
उत्तर
decrease
As the air inside the jar is pumped out, the air pressure decreases. Thus, the pressure in the liquid near the bottom of the beaker decreases.
APPEARS IN
संबंधित प्रश्न
A large He balloon of volume 1425 m3 is used to lift a payload of 400 kg. Assume that the balloon maintains constant radius as it rises. How high does it rise? [Take y0= 8000 m and `rho_"He"`= 0.18 kg m–3].
Pressure is the thrust acting on a surface of ........... area.
A body weighing 5 kgf, placed on a surface of area 0.1 m2, exerts a thrust on the surface equal to
The feet of lizards act like
Name two factors on which the pressure on a surface depends.
When does a man exert more pressure on the floor: while standing or while walking?
A normal force of 200 N acts on an area of 0.02 m2. Find the pressure in pascal.
The base of a container measures 15 cm × 20 cm. It is placed on a table top. If the weight of the container is 60 N, what is the pressure exerted by the container on the table top?
The pressure in a liquid at two points in the same horizontal plane are equal. Consider an elevator accelerating upward and a car accelerating on a horizontal road. The above statement is correct in
Multiple Choice Question.
A hydraulic lift is designed to lift heavy objects of maximum mass 2000 kg. The area of cross-section of piston carrying the load is 2.25 × 10-2 m2. What is the maximum pressure the smaller piston would have to bear?
A water tank has four taps fixed at points A, B, C, D as shown in the following figure. The water will flow out at the same pressure from taps at
A brick is kept in three different ways on a table as shown in the following figure. The pressure exerted by the brick on the table will be
 |
 |
 |
| A | B | C |
The total force exerted by a body normal to the surface is called ______.
Cooking in a place located at a higher altitude is difficult. Why?
Determine the pressure when a force of 200 N acts on the area
- 20 m2
- 8 m2
Fluids in general are ______.
The shape and size of the solids do not easily change.
Assertion (A): Air gets thinner with increasing altitude.
Reason (R): The atmospheric pressure increases as we go up in mountains.
Pressure is a scalar quantity because ______.
- it is the ratio of force to area and both force and area are vectors.
- it is the ratio of the magnitude of the force to area.
- it is the ratio of the component of the force normal to the area.
- it does not depend on the size of the area chosen.
