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Friday, 10 April 2026
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Physics Past Questions and Answers

Physics Questions

Question 3921:
WAEC 2016
Which of the following statements is correct about the effect of dissolved salt on the freezing point of water?
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  • A The freezing point is lowered
  • B The freezing point is increased
  • C There is no change in the freezing point
  • D The change in the freezing point depends on the temperature of the surrounding
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Question 3922:
WAEC 2016
A pressurized perfume bottle is left on the window pane of a room. What happens to he gas molecules of the perfume on a sunny day? They
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  • A Expand
  • B Collide less often
  • C Move more rapidly
  • D Contract
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Question 3923:
WAEC 2016
Given that v, f and \(\lambda\) are the velocity, frequency and wavelength of a wave respectively. Which of the following equations is correct?
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  • A V = f<sup style='font-size: smaller;'>2</sup>\(\lambda\)
  • B F = \(\frac{v}{\lambda}\)
  • C F = \(\frac{v}{\lambda^2}\)
  • D \(\lambda = \frac{f}{v^2}\)
View Answer & Explanation
Question 3924:
WAEC 2016
The distance between two successive trough of a wave is 0.4m. If the frequency of the source is 825Hz, Calculate the speed of the wave
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  • A 165.0 ms<sup style='font-size: smaller;'>-1</sup>
  • B 330.0ms<sup style='font-size: smaller;'>-1</sup>
  • C 41.5ms<sup style='font-size: smaller;'>-1</sup>
  • D 85.0ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 3925:
WAEC 2016
X-rays and infrared rays are both electromagnetic. Which common property do the waves have? Both waves
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  • A Are longitudinal
  • B Have same frequency
  • C Have the same wavelength
  • D Travel at the same speed in a vacuum
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