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JAMB Physics 1994 Question 19

Question 19

Density and Upthrust

If a solid X floats in liquid P of relative density 2.0 and in liquid Q of relative density 1.5, it can be inferred that the

  1. A.weight of P displaced is greater than that of Q
  2. B.weight of p displaced is less than that of Q
  3. C.volume of P displaced is greater than that of Q
  4. D.volume of P displaced is less than that of Q.
Show the answer and explanation

Answer: D (volume of P displaced is less than that of Q.)

Explanation

A floating body displaces its own weight in any liquid, so the weights displaced are equal. The denser liquid P needs a smaller volume to give that weight.