A

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Q. Two rods, one of copper and other of steel, experience the same upthrust when placed in water.Thus, both have

  • (A) Equal volume
  • (B) Equal weight
  • (C) Equal density
  • (D) Equal mass
  • Correct Answer - Option(A)
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Explanation by: Admin
When a body is placed in water, the upthrust or buoyant force acting on it depends upon the following factors: (i) Volume of the body submerged in the liquid - (V), or volume of the liquid displaced - (V); (ii) Density of the liquid - (d); and (iii) Acceleration due to gravity In-line. Since in the present question, we can assume g to be a constant and know that steel and copper have different densities, the only case in which they can have similar upthrust will be because of their volumes.

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