WAEC Physics 2014 Objective — Question 12
Question 12 of 50 from the West African Examinations Council (WAEC) Physics 2014 Objective paper, with the correct answer and a full explanation.
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The period of a simple pendulum X is 5 s. What is the period of a simple pendulum Y which makes 50 vibrations in the same time it takes X to make 20 vibrations?
- A. 12.5 s
- B. 2.5 s
- C. 2.0 sCorrect
- D. 1.2 s
Explanation
Time for X to make 20 vibrations = 20×5 = 100s. Period of Y = 100s/50 = 2.0s.
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