Advertisements
Advertisements
प्रश्न
Select the correct option.
The unit Nm2 is the unit of
पर्याय
force
pressure
thrust
momentum
Advertisements
उत्तर
pressure
APPEARS IN
संबंधित प्रश्न
A body floats in a liquid when its weight becomes equal to the weight of the liquid displaced by its submerged part.
The relative density of alcohol is 0.8. Its density is
The density of brass is 8.4 g cm-3. What do you mean by this statement?
Differentiate between thrust and pressure.
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 S.I. unit of pressure is :
It is easier to lift a heavy stone under water than in air. Explain.
A body will experience minimum upthrust when it is completely immersed in :
The S.I. unit of upthrust is :
Complete the analogy.
Downward force : Weight :: Upward force offered by liquid : _____.
