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WAEC Physics 2023 Objective — Question 40

Question 40 of 50 from the West African Examinations Council (WAEC) Physics 2023 Objective paper, with the correct answer and a full explanation.

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Determine the frequency of the waves.

  • A. 24 Hz
  • B. 192 Hz
  • C. 240 HzCorrect
  • D. 286 Hz

Explanation

Using v=fλ: f=v/λ=120/0.5=240 Hz.

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