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प्रश्न
What is meant by pressure? State its S.I. unit.
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उत्तर
Pressure is the thrust per unit area of the surface.
Its S.I. unit is 'newton per metre2' or 'pascal'.
संबंधित प्रश्न
What is the scientific name of the 'upward force' acting on an object immersed in a liquid?
The buoyant force experienced by a body when floating in saltwater is ....... to or same that of when floating in pure water.
Define the term Density of a substance.
Deduce an expression for the pressure at depth inside a liquid.
How does the liquid pressure on a diver change if:
the diver moves to the greater depth
The pressure inside a liquid of density p at a depth h is :
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A body of mass 3.5 kg displaces 1000 cm3 of water when fully immersed inside it. Calculate:
- the volume of body,
- the upthrust on body and
- the apparent weight of body in water.
A beaker contains a liquid of density ‘ρ’ up to height ‘h’ such that ‘PA’ is atmospheric pressure and ‘g’ is the acceleration due to gravity. Answer the following questions:
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- What is the pressure on the base of the beaker?
- What is the lateral pressure at the base on the inner walls of the beaker?
What do you mean by buoyancy?
