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प्रश्न
State three factors on which the pressure at a point in a liquid depends.
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उत्तर
Pressure at a point in a liquid depends upon the following three factors:
(i) Depth of the point below the free surface.
(ii) Density of liquid.
(iii) Acceleration due to gravity.
संबंधित प्रश्न
What is meant by the term ‘buoyancy’ ?
Relative density of a substance is expressed in g cm-3.
A body experiences the same buoyant force while floating in water or alcohol.
The density of water is 1.0 g Cm-3. The density of iron is 7.8 × 10″3 g Cm-3. The density of mercury is 13.6 g Cm-3.
Answer the following:
Will a piece of iron float or sink in mercury?
The pressure of water on the ground floor is 40,000 Pa and on the first floor is 10,000 Pa. Find the height of the first floor. (Take : density of water = 1000 kg m-3, g = 10 m s-2)
A simple U tube contains mercury to the same level in both of its arms. If water is poured to a height of 13.6 cm in one arm, how much will be the rise in mercury level in the other arm?
Given : density of mercury = 13.6 x 103 kg m-3 and density of water = 103 kg m-3.
Complete the following sentence :
A piece of wood is held under water. The upthrust on it will be ___________ the weight of the wood piece.
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.
A balloon filled with helium gas floats in a big closed jar which is connected to an evacuating pump. What will be your observation, if air from the jar is pumped out? Explain your answer.
Select the correct option:
When an object sinks in a liquid, its:
