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JAMB Physics 1998 Question 16

Question 16

Density and Upthrust

A solid of weight 0.600 N is totally immersed in oil and water respectively. If the upthrust in oil is 0.210 N and the relative density of oil is 0.875 find the upthrust in water.

  1. A.0.600 N
  2. B.0.360 N
  3. C.0.240 N
  4. D.0.180 N
Show the answer and explanation

Answer: C (0.240 N)

Explanation

Relative density = upthrust in oil ÷ upthrust in water, so upthrust in water = 0.210 ÷ 0.875 = 0.240 N.