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JAMB Physics 2020 Objective — Question 26

Question 26 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2020 Objective paper, with the correct answer and a full explanation.

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26. The equation of a travelling wave is given by y=2sin(4πx-25πt), the frequency of the wave is

  • A. A. 1.25Hz
  • B. B. 4Hz
  • C. C. 12.5HzCorrect
  • D. D. 50Hz

Explanation

Comparing with y=Asin(kx-ωt): ω=25π=2πf, so f=12.5Hz.

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