Assertion: A dam for water reservoir is built thicker at bottom than at the loop.
Reason : Pressure of water is very large at the bottom.

Options

A. Statement I is true, statement II is true and Statement II is a correct explanation for Statement I.
B. Statement I is true, Statement II is true and Statement II is NOT the correct explanation for Statement I.
C. Statement I is true, Statement II is false.
D. Statement I is false, Statement II is true.

Answer

A

Explanation

With the increase in depth the pressure increases according to the formula `Pproph`. Therefore the force perpendicular to the wall of damincreases. Hence, the dam must have greater strength at base than at top. Due to this dams are made thicker at the base than at the top.