WAEC Physics 2018 Objective — Question 6
Question 6 of 50 from the West African Examinations Council (WAEC) Physics 2018 Objective paper, with the correct answer and a full explanation.
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A dam is able to hold a large quantity of water because its wall is
- A. thickest at the top
- B. thickest at the middle
- C. thickest at the bottomCorrect
- D. of the same thickness throughout
Explanation
Water (hydrostatic) pressure increases with depth, so the dam wall must be thickest at the bottom to withstand the greatest pressure.
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