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Saturday, 04 April 2026
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Physics Past Questions and Answers

Waec Physics Questions

Question 1851:
The pitch of a note is not affected by
  • A Frequency
  • B Tension in a vibrating string
  • C Mass of a vibrating string
  • D Amplitude of sound wave
View Answer & Explanation
Question 1852:
When two flat plate conductors are arranged in such a way that they possess equal and opposite charges seperated by a dielectric, they form a/an
  • A Electroscope
  • B Electrophorus
  • C Capacitor
  • D Cell
View Answer & Explanation
Question 1853:
Which electrical device is illustrated above?
  • A A.c. generator
  • B A.c. motor
  • C D.c. generator
  • D D.c. motor
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Question 1854:
A simple barometer is constructed using a liquid \(Q_{1}\) of density 16.2\(g/cm^{3}\). Calculate the least lenth of the tube to be used to measure pressure of 1.5atm. [Density of mercury = 13.6\(g/cm^{3}\), 1atm = 76.0 cm of Mercury]
  • A 1358mm
  • B 957mm
  • C 760mm
  • D 638mm
View Answer & Explanation
Question 1855:
A bar AB is balanced horizontally on two knife edges as illustrated as in the diagram above. Determine the weight of the bar.
  • A 10.0N
  • B 20.0N
  • C 40.0N
  • D 50.0N
View Answer & Explanation