WAEC Physics
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 bottom
d.
of the same thickness throughout
Correct answer: C
The walls of dams are thicker at the bottom. The pressure exerted by water on the walls of the dam is more at the bottom and the extra thickness enables it to withstand this pressure.
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