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प्रश्न
Select the correct option:
When a body is floating in a liquid:
पर्याय
The weight of the body is less than the upthrust due to immersed part of the body
The weight of body is more than the upthrust due to the immersed part of the body
The weight of body is equal to the upthrust due to the immersed part of the body
none of the above
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उत्तर
The weight of body is equal to the upthrust due to the immersed part of the body
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संबंधित प्रश्न
A body of density ρ is immersed in a liquid of density ρL. State the condition when the body will (i) float and (ii) sink in the liquid.
The density of water is :
Explain the following :
As a ship in harbour is being unloaded, it slowly rises higher in water.
Explain the following :
A balloon filled with hydrogen rises to a certain height and then stops rising further.
A piece of wood of uniform cross section and height 15 cm floats vertically with its height 10 cm in water and 12 cm in spirit. Find the densities of wood and spirit.
A wooden block floats in water with two-third of its volume submerged.
(a) Calculate the density of wood.
(b) When the same block is placed in oil, three-quarters of its volume is immersed in oil. Calculate the density of oil.
An inflated balloon is placed inside a big glass jar which is connected to an evacuating pump. What will you observe when the evacuating pump starts working? Give a reason for your answer.
Select the correct option:
The ratio between the mass of a substance and the mass of an equal volume of water at 4°C is called:
A wooden cube of side 10 cm has a mass of 700 g. It will float in the water with:
(a) Half of its volume inside the water
(b) 3 cm height above the water surface
(c) 7 cm height above the water surface
(d) Just inside the water surface.
Complete the following result:
S.l. unit of density is _________
