Advertisements
Advertisements
प्रश्न
For a given object, the buoyant force in liquids of different ______ is ______.
पर्याय
the same
density
different
area
उत्तर
For a given object, the buoyant force in liquids of different density is different.
संबंधित प्रश्न
What is the scientific name of the 'upward force' acting on an object immersed in a liquid?
A boy get into a floating boat.
What happens to the buoyant force on the boat ?
What is a density bottle? How is it used to find the density of a liquid?
Why do sea divers need special protective suit?
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.
Will a body weigh more in air or vacuum when weighed with a spring balance? Give a reason for your answer.
A body experiences an upthrust F1 in river water and F2 in sea water when dipped up to the same level. Which is more, F1 or F2? Give reason.
It is easier to lift a heavy stone under water than in air. Explain.
Select the correct option.
The unit Nm2 is the unit of
Complete the analogy.
Downward force: Weight:: Upward force offered by liquid: _____
