Question

the wall of a dam is broad at its base?

Answer 1

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

Answer 2

water exerts a lot of pressure on the wall of a container in which it is kept in or on the walls of the dams the walls are broad as its base so that they cannot be broken easily by the pressure of the water as it is acting as a barrier for the water.