Why are dams broader at the base and narrow at the top ?

It is economically feasible.

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It looks constructionally beautiful.

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To support increase in water pressure at the depth

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None of these

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Solution

The correct option is C
To support increase in water pressure at the depth

The pressure of water stored in the dam increases with depth. So, the bottom of the dam is broader to support the increase in water pressure.

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Similar questions

Q. Why are buildings and dams made broader at the base than at the top?

Q. The pressure

P_{1}

at the top of a dam and

P_{2}

at a depth

h

from the top inside water (density

ρ

) are related as

(a) How does the pressure of a liquid depend on its depth? Draw a labelled diagram to show that the pressure of a liquid (say, water) depends on its depth.

(b) Explain why, the walls of a dam are thicker near the bottom than at the top.

Statement 1: The liquid pressure increases as the depth increases.

Statement 2: The liquid at lower depths has to support all of the water above it.

The pressure $P_{1}$ at the top of a dam and $P_{2}$ at a depth $h$ from the top are related as:

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Why are dams broader at the base and narrow at the top ?

The correct option is C To support increase in water pressure at the depth The pressure of water stored in the dam increases with depth. So, the bottom of the dam is broader to support the increase in water pressure.

The correct option is C
To support increase in water pressure at the depth

The pressure of water stored in the dam increases with depth. So, the bottom of the dam is broader to support the increase in water pressure.