Which one of the following statements is true? | Filo
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Class 9

Science

Physics

Gravitation

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Which one of the following statements is true?

  1. Archimedes' principle can also be applied to gases
  2. The buoyant force depends on the nature of object immersed in the liquid.
  3. Ice floats in water because the density of ice is more than that of water.
  4. Force acting on a unit area is called thrust.
Correct Answer: Option(a)
Solution: Answer is A.

The Archimedes principle, states that the buoyant force exerted on a body immersed in a fluid is equal to the weight of the fluid the body displaces. In other words, to calculate the buoyant force on an object we assume that the submersed part of the object is made of water and then calculate the weight of that water.
This principle is valid for any fluid not only liquids (such as water) but also gases (such as air).
 
Hence, only the statement in option A is true.
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