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Friday, 03 April 2026
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Physics Past Questions and Answers

Waec Physics Questions

Question 1691:
Which of the following statements about diode is correct?
  • A Reverse bias diodes have low resistance
  • B Forward bias diodes have high resistance
  • C Forward bias diodes produce high current
  • D Forward bias diodes function as a result of heat
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Question 1692:
Which of the following radiations constitutes a stream of electrons?
  • A Ramma rays
  • B X-rays
  • C Cathode rays
  • D Radio waves
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Question 1693:
\(^{226}_{88}Ra\) emits two alpha particles to produce polonium(po) nuclide. The correct formula for the nuclide?
  • A \(^{224}_{86}po\)
  • B \(^{222}_{86}po\)
  • C \(^{222}_{84}po\)
  • D \(^{218}_{84}po\)
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Question 1694:
Two angles of a pentagon are in the ratio 2:3. The others are 60o each. Calculate the smaller of the two angles
  • A 72o
  • B 100o
  • C 120o
  • D 144o
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Question 1695:
(a) What is a projectile?
(b) Give the reason why the horizontal component of the velocity of a projectile remains the same at every point of its flight.





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