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Wednesday, 19 August 2026
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Physics Past Questions and Answers

Topic: Structure of Matter and Kinetic Theory

Jamb Physics Questions - Structure of Matter and Kinetic Theory

Question 186:
The density of 400cm of palm oil was 0.9gcm-3 before frying. If the density of the oil was 0.6gm-3 after frying, assuming no loss of oil due to spilling, its new volume was?
  • A 1360cm\(^3\)
  • B 600cm\(^3\)
  • C 240cm\(^3\)
  • D 8000m\(^3\)
View Answer & Explanation
Question 187:
Which of the following statements are TRUE of isotopes?
I. Isotopes of an element have the same chemical properties because they have the same number of electrons
II. Isotopes of elements are normally separated using physical properties
III. Isotopes of an element have the same number of protons in their nuclei
  • A I and II only
  • B I and III only
  • C II and III only
  • D I, II and III
View Answer & Explanation
Question 188:
A lead bullet of mass 0.05 kg is fired with a velocity of 200 m/s into a lead block of mass 0.95 kg. Given that the lead block can move freely, the final kinetic energy after impact is
  • A 100J
  • B 150J
  • C 50J
  • D 200J
View Answer & Explanation
Question 189:
If the fraction of the atoms of a radioactive material left after 120years is \(\frac{1}{64}\), what is the half-life of the material? \(\frac{1}{64}\)
  • A 20 years
  • B 10 years
  • C 2 years
  • D 24 years
View Answer & Explanation
Question 190:
The process whereby a liquid turns spontaneously into vapour is called
  • A Regelation
  • B Evaporation
  • C Boiling
  • D Sublimation
View Answer & Explanation