WAEC Physics 2022 Objective — Question 4
Question 4 of 50 from the West African Examinations Council (WAEC) Physics 2022 Objective paper, with the correct answer and a full explanation.
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The length of a simple pendulum is increased by a factor of four. By what factor is its period increased?
- A. 0.5π
- B. 2π
- C. 2Correct
- D. 4
Explanation
T=2π√(l/g), so T∝√l. If l increases by factor 4, T increases by factor √4=2.
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