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प्रश्न
A body will sink if the weight of the body is greater than the buoyant force.
पर्याय
True
False
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उत्तर
A body will sink if the weight of the body is greater than the buoyant force- True.
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संबंधित प्रश्न
Name the scientist who gave he magnitude of buoyant force acting on a solid object immersed in a liquid.
The density of a body which sinks in water is ......... than 1000 Kg m-3.
The density of water is 1.0 g Cm-3. The density of iron is 7.8 × 10″3 g Cm-3. The density of mercury is 13.6 g Cm-3.
Answer the following:
Will a piece of iron float or sink in mercury?
What is meant by pressure? State its S.I. unit.
Explain why a gas bubble released at the bottom of a lake grows in size as it rises to the surface of the lake.
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 inside a liquid of density p at a depth h is :
A simple U tube contains mercury to the same level in both of its arms. If water is poured to a height of 13.6 cm in one arm, how much will be the rise in mercury level in the other arm?
Given : density of mercury = 13.6 x 103 kg m-3 and density of water = 103 kg m-3.
A piece of wood if left under water comes to the surface. Explain the reason.
State whether true or false. If false, correct the statement.
The weight of fluid displaced determines the buoyant force on an object.
