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प्रश्न
Figure shows the same block of wood floating in three different liquids A, B and C of densities ρ1, ρ2 and ρ3 respectively. Which of the liquid has the highest density? Give a reason for your answer.
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उत्तर
The upthrust on the body by each liquid is the same and equal to the weight of the body.
However, upthrust = Volume submerged × ρL × g,
For the liquid C, since the volume submerged is least so the density ρ3 must be maximum.
संबंधित प्रश्न
Relative density of a substance is expressed in g cm-3.
A body while floating sinks deeper in a liquid of low density than in a liquid of high density.
The S.I. unit of density is ..........
What is the law of floatation?
Define the term thrust. State its S.I. unit.
State whether thrust is a scalar or vector?
The S.I. unit of pressure is :
What is meant by the term buoyancy?
Two spheres A and B, each of volume 100 cm3 is placed on water (density = 1.0 g cm−3). The sphere A is made of wood of density 0.3 g cm−3 and sphere B is made of iron of density 8.9 g cm−3.
- Find:
- The weight of each sphere, and
- The upthrust on each sphere.
- Which sphere will float? Give reason.
Complete the analogy.
Downward force : Weight :: Upward force offered by liquid : _____.
