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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
The density of a body which sinks in water is ......... than 1000 Kg m-3.
When does an object float or sink when placed on the surface of a liquid ?
What is a density bottle? How is it used to find the density of a liquid?
State whether thrust is a scalar or vector?
How does the pressure exerted by a solid and fluid differ?
Why is a force needed to keep a block of wood inside water?
A piece of wood if left under water comes to the surface. Explain the reason.
A body will experience minimum upthrust when it is completely immersed in :
You are provided with a hollow iron ball A of volume 15 cm3 and mass 12 g and a solid iron ball B of mass 12 g. Both are placed on the surface of water contained in a large tub.
- Find upthrust on each ball.
- Which ball will sink? Give a reason for your answer (Density of iron = 8.0 g cm-3)
The mass of a block made of certain material is 13.5 kg and its volume is 15 × 10-3 m3.
(a) Calculate upthrust on the block if it is held fully immersed in water.
(b) Will the block float or sink in water when released? Give a reason for your answer.
(c) What will be the upthrust on block while floating?
Take density of water = 1000 kg m-3.
