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प्रश्न
For a given object, the buoyant force in liquids of different ______ is ______.
पर्याय
the same
density
different
area
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उत्तर
For a given object, the buoyant force in liquids of different density is the same.
संबंधित प्रश्न
The buoyant force experienced by a body when floating in saltwater is ....... to or same that of when floating in pure water.
What is the law of floatation?
The diagram given below show a body floating in three different liquids. A, B and C at different levels.
(a) In which liquid does the body experience the greatest buoyant force?
(b) Which liquid has the least density?
(c) Which liquid has the highest density?
The diagram below in Fig. 4.12 shows a device which makes the use of the principle of transmission of pressure.
- Name the parts labelled by the letters X and Y.
- Describe what happens to valves A and B and to the quantity of water in the two cylinders when the lever arm is moved down.
- Give reasons for what happens to valves A and B in part (ii).
- What happens when the release valve is opened?
- What happens to valve B in cylinder P when the lever arm is moved up?
- Give a reason for your answer in part (v).
- State one use of the above device.
In what direction and at what point does the buoyant force on a body due to a liquid act?
A piece of wood if left under water comes to the surface. Explain the reason.
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.
Select the correct option.
The unit Nm2 is the unit of
The upward force that is caused due to the pressure difference in liquid (or fluid) is called ______.
Salt water provides less buoyant force than freshwater.
