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Thursday, 30 July 2026
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Physics Past Questions and Answers

Jamb 1993 Physics Questions

Question 36:
Natural radioactivity is the random spontaneous disintegration of the nuclei of heavy isotopes of certain elements with the emission of
  • A \(\alpha\), X, and \( \beta\)
  • B \(\alpha\), \(\beta\) and \(\gamma\)-rays
  • C X, \(\alpha\), \(\gamma\)-ray
  • D \(\alpha\), \( \beta\) and X-rays
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Question 37:
Which of the following are produced after a nuclear fusion process? i. one heavy nucleus. ii. neutrons-1. iii. protons. iv. Energy.
  • A I and ii
  • B I and iv
  • C Ii and iii
  • D Ii and iv
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Question 38:
An element X of an atomic number 88 and mass number 226 decays to form an element Z by emitting two beta particles and an alpha particle. Z is represented by
  • A \(^{222}_{82}Z\)
  • B \(^{222}_{88}Z\)
  • C \(^{226}_{86}Z\)
  • D \(^{226}_{80}Z\)
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Question 39:
The kinetic theory of photoelectron liberated from a metallic surface depends on the
  • A Intensity of the incident radiation
  • B Time duration of the incident radiation
  • C Temperature of the incident radiation
  • D Frequency of the incident radiation
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Question 40:
The diagram above shows a velocity time graph representing the motion of a car. Find the total distance covered during the acceleration and retardation of the motion
  • A 75m
  • B 150m
  • C 300m
  • D 375m
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