Assertion :A block of wood is floating in a pond of water and its | Filo
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Class 9

Science

Physics

Gravitation

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Assertion :A block of wood is floating in a pond of water and its apparent weigth is zero.
Reason :The weight of water displaced (buoyant force) acting vertically upwards is just equal to the weight of the body which acts vertically downwards.

  1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
  2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
  3. Assertion is correct but Reason is incorrect
  4. Both Assertion and Reason are incorrect
Correct Answer: Option(a)
Solution: Loss in weight of body=weight of water displaced by the body=Buoyancy force or
upthrust exerted by water on the body
So, both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
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