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WAEC 2025

A student found out from a simple pendulum experiment that 20 oscillations were completed in 38 seconds.

  1. A8.0s
  2. B3.8s
  3. C1.9s
  4. D2.0s

Explanation

The period (T) of a simple pendulum is the time taken to complete one full oscillation. T = Total time / Number of oscillations = 38 s / 20 = 1.9 s.

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