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What is the Scientific Name of the 'Upward Force' Acting on an Object Immersed in a Liquid?

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प्रश्न

What is the scientific name of the 'upward force' acting on an object immersed in a liquid?

एक पंक्ति में उत्तर
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उत्तर

Buoyant force or upthrust is the scientific term for the upward force acting on an object immersed in a liquid.

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अध्याय 3: Gravitation - Very Short Answers 2 [पृष्ठ १२३]

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लखमीर सिंग Physics Part 1 [English] Class 9
अध्याय 3 Gravitation
Very Short Answers 2 | Q 14 | पृष्ठ १२३

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संबंधित प्रश्न

What happens to the buoyant force as more and more volume of a solid object is immersed in a liquid ? When does the buoyant force become maximum ?


The S.I. unit of density is ..........


A piece of wood floats on water. The buoyant force on wood will be


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.
Ans the following:
Will a piece of iron float or sink in water?


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?


Pressure at the free surface of a water lake is P1, while at a point at depth h below its free surface is P2. (a) How are P1 and P2 related? (b)Which is more P1 or P2?


The diagram below in Fig. 4.12 shows a device which makes the use of the principle of transmission of pressure.

  1. Name the parts labelled by the letters X and Y.
  2. 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.
  3. Give reasons for what happens to valves A and B in part (ii).
  4. What happens when the release valve is opened?
  5. What happens to valve B in cylinder P when the lever arm is moved up?
  6. Give a reason for your answer in part (v).
  7. State one use of the above device.

Complete the following sentence :

Pressure at a depth h in a liquid of density p is ......................


A homogeneous block floats on water (a) partly immersed (b) completely immersed. In each case state the position of centre of buoyancy B with respect to the centre of gravity G of the block.


The base of a cylindrical vessel measures 300 cm2. Water (density = 1000 kg m-3) is poured into it up to a depth of 6 cm. Calculate the pressure and thrust of water on the base. (g = 10 m s-2)

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