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Upthrust and Archimedes principle PHYSICS - Upthrust and Archimedes principle

ICSE - STD 9 - PHYSICS (ICSE - English Medium). 55 questions in this chapter.

Question types

Upthrust and Archimedes principle question types

55 questions across 5 question groups — pick any mix to generate a PHYSICS paper with step-by-step answer keys.

55
Questions
5
Question groups
5
Question types
Sample Questions

Upthrust and Archimedes principle questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
A body has density $9.6 gcm - s$. Its density in SI system is :
  • A
    $96 kgm ^2$
  • B
    $960 kgm ^2$
  • C
    $9600 kgm ^{-3}$
  • D
    $96,000 kgm ^2$
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Q 2MCQ1 Mark
The ratio between the mass of a substance and the mass of an equal volume of water at $4^{\circ} C$ is called:
  • ✓
    relative density
  • B
    density
  • C
    weight
  • D
    pressure

Answer: A.

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Q 3MCQ1 Mark
When a body is wholly or partially immersed in a liquid, it experiences a buoyant force which is equal to:
  • A
    volume of liquid displaced by it
  • ✓
    weight of liquid displaced by it
  • C
    both (a) and (b)
  • D
    none of the above

Answer: B.

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Q 5MCQ1 Mark
When an object sinks in a liquid, its :
  • A
    buoyant force is more than the weight of object
  • ✓
    buoyant force is less than the weight of object
  • C
    buoyant force is equal to the weight of the object
  • D
    none of the above

Answer: B.

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Q 7[2 Mark Question Answer]2 Marks
A jeweller claims to make ornaments of pure gold of relative density 19.3. A customer buys from him a bangle of weight 25.25 gf . The customer then weighs the bangle under water and finds its weight 23.075 g with the help of suitable calculations explain whether the bangle is of pure gold or not.
[R.D. of gold is 11.61 and bangle is not of pure gold] Ans. R.D of pure gold $=19.3$...given
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Q 8[2 Mark Question Answer]2 Marks
A wooden block is weighed with iron, such that combination just floats in water at room temperature. State your observations when :
(1) water is heated above room temperature
(2) water is cooled below $4^{\circ} C$. Give reasons to your answers in (1) and (2).
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Q 13[3 Mark Question Answer]3 Marks
(a) When a piece of ice floating in water melts, the level of water inside the glass remains same. Explain.
(b) An inflated balloon is placed inside a big glass jar which is connected to an evacuating pump. What will you observe when the evacuating pump starts working? Give a reason for your answer.
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Q 15[3 Mark Question Answer]3 Marks
A test tube loaded with lead shots weighs 25 gf and floats upto the mark X in water.When the test tube is made to float in brine solution, it needs 5 gf more of lead shots to float upto level X. Find the relative density of brine solution.
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Q 18[5 Mark Question Answer]4 Marks
(a) State Archimedes' Principle.
(b) A block of mass 7 kg and volume $0.07 m^3$ floats in a liquid of density $140 kg / m ^3$.
Calculate:
1. Volume of block above the surface of liquid.
2. Density of block.
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Q 19[5 Mark Question Answer]4 Marks
A test tube loaded with lead shots, weighs 150 gf and floats upto the mark X in water. The test tube is then made to float in alcohol. It is found that 27 gf of lead shots have to be removed, so as to float it to level X. Find R.D. of alcohol.
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Q 20[5 Mark Question Answer]4 Marks
A balloon of volume $120 m^2$ is filled with hot air, of density $38 kg^2$. If the fabric of balloon weighs 12 kg , such that an additional equipment of wt . x is attached to it, calculate the magnitude of Density of cold air is $1.30 kgm =$.
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