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प्रश्न
A body floats in a liquid when its weight becomes equal to the weight of the liquid displaced by its submerged part.
पर्याय
Ture
False
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उत्तर
True.
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संबंधित प्रश्न
What is the other name of buoyant force ?
Distinguish between density and relative density.
Which of the following will sink or float on water? (Density of water = 1 g Cm-3)
body D having density 0.85 g m-3
For a given object, the buoyant force in liquids of different ______ is ______.
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.
The pressure of water on the ground floor is 40,000 Pa and on the first floor is 10,000 Pa. Find the height of the first floor. (Take : density of water = 1000 kg m-3, g = 10 m s-2)
What is the cause of upthrust? At which point can it be considered to act?
What is meant by up thrust?
Define atmospheric pressure diving suits. Does a diving suit create buoyancy?
Complete the analogy.
Downward force : Weight :: Upward force offered by liquid : ______
