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प्रश्न
State the laws of liquid pressure.
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उत्तर
Laws of liquid pressure:
(i) Pressure at a point inside the liquid increases with the depth from its free surface.
(ii) In a stationary liquid, pressure is same at all points on a horizontal plane.
(iii) Pressure is same in all directions about a point in the liquid.
(iv) Pressure at same depth is different in different liquids. It increases with the increase in the density of liquid.
(v) A liquid seeks its own level.
संबंधित प्रश्न
Why does a block of wood held under water rise to the surface when released ?
Explain why a gas bubble released at the bottom of a lake grows in size as it rises to the surface of the lake.
How is the upthrust related to the volume of the body submerged in a liquid?
A body experiences an upthrust F1 in river water and F2 in sea water when dipped up to the same level. Which is more, F1 or F2? Give reason.
A body weighs 450 gf in air and 310 gf when completely immersed in water. Find
(i) The volume of the body,
(ii) The loss in weight of the body, and
(iii) The upthrust on the body.
State the assumption made in part (i).
A block of wood is floating on water with its dimensions 50 cm x 50 cm x 50 cm inside water. Calculate the buoyant force acting on the block. Take g = 9.8 N kg-1.
Complete the following sentence.
Mass = .................... × density
Select the correct option:
The phenomenon due to which a solid experiences upward force when immersed in water is called:
How is thrust different from pressure?
Higher Order Thinking Skill.
How does a fish manage to rise up and move down in water?
