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प्रश्न
Relative density of a substance is expressed in g cm-3.
विकल्प
True
False
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उत्तर
False
Relative density of a substance has no units.
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संबंधित प्रश्न
In what direction does the buoyant force on an object immersed in a liquid act?
What is the other name of buoyant force ?
A block of iron of mass 7.5 kg and of dimensions 12 cm × 8 cm × 10 cm is kept on a table top on its base of side 12 cm × 8 cm.
Calculate:
- Thrust and
- Pressure exerted on the table top
Take 1 kgf = 10 N.
Define upthrust and state its S.I. unit.
Prove that the loss in weight of a body when immersed wholly or partially in a liquid is equal to the buoyant force (or upthrust) and this loss is because of the difference in pressure exerted by liquid on the upper and lower surfaces of the submerged part of body.
The blood pressure reading of a patient is recorded 160/100. Express the lower pressure in SI units.
[Take density of mercury as 13.6 × 103 kgm−3 and the value of ‘g’ as 10 ms−2]
Select the correct option:
When a body is wholly or partially immersed in a liquid, it experiences a buoyant force which is equal to:
A body will sink if the weight of the body is greater than the buoyant force.
The point at which the force of buoyancy is supposed to act is known as ______.
