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Sunday, 16 August 2026
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Physics Past Questions and Answers

Topic: Liquids At Rest

Jamb Physics Questions - Liquids At Rest

Question 1:
The relative densities of zinc, brass, copper, gold and silver are respectively 7.1, 8.5, 8.9, 19.3, 10.5. A metal ornament which weighs 0.425kg and can displace 50 x 10-6m3m of water is made of
  • A Zinc
  • B Brass
  • C Copper
  • D Gold
  • E Silver
View Answer & Explanation
Question 2:
A piece of wood is floating on water. The forces acting on the wood are
  • A Upthrust and reaction
  • B Weight and reaction
  • C Weight and upthrust
  • D Upthrust and viscousity
  • E Weight and viscousity
View Answer & Explanation
Question 3:
A uniform cylindrical block of wood floats in water with one-third of its height above the water level, in a liquid of relative density 0.8, what fraction of its height will be above the liquid level?
  • A \(\frac{1}{6}\)
  • B \(\frac{1}{5}\)
  • C \(\frac{1}{3}\)
  • D \(\frac{4}{5}\)
  • E \(\frac{5}{6}\)
View Answer & Explanation
Question 4:
The photocell works on the principle of the
  • A Voltaic cell
  • B Emision of electrons by incident radiation
  • C Emision of protons by incident electrons
  • D Photographic plate
View Answer & Explanation
Question 5:
A cube of sides 0.1m hangs freely from a string. What is the upthrust on the cube when totally immersed in water? [density of water is 1000kgm-2, g = 10ms-2]
  • A 1000 N
  • B 700 N
  • C 110 N
  • D 10 N
View Answer & Explanation