Question

The wall of a dam is broad as its base (why is this so?)

Answer 1

Answer:

The wall of a dam is broad at its base. The reason behind this is, pressure exerted by the liquid increases with increase in depth. The dam contains huge amount of water and as we go deep the pressure exerted by such a huge amount of water increases to very high.

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Answer 2

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Your answer is
The wall of a dam is as broad as its Base because water inside the dam exerts a huge pressure on the walls
So, To avoid the breaking of dam the walls of the dam are built very broad