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प्रश्न
Will a body weigh more in air or vacuum when weighed with a spring balance? Give a reason for your answer.
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उत्तर
A body shall weigh more in vacuum because in vacuum, i.e. in absence of air, no upthrust will act on the body.
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संबंधित प्रश्न
What causes buoyant force (or upthrust) on a boat ?
Why does a block of wood held under water rise to the surface when released ?
Define buoyant force. Name two factors on which buoyant force depends.
Name the S.I. unit of density. How is it related to g Cm-3?
Define the term relative density of a substance.
Differentiate between thrust and pressure.
Describe a simple experiment to demonstrate that a liquid enclosed in a vessel exerts pressure in all directions.
State three factors on which the pressure at a point in a liquid depends.
The S.I. unit of pressure is :
Complete the analogy.
Downward force : Weight :: Upward force offered by liquid : _____.
