Assertion (A): Floodgate dams are built across rivers so that water flows into inlets and gets trapped during high tides.

Reason (R): Trapped water flows back via a pipe that carries it through a power generating turbine.

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Both (A) and (R) are true and (R) is the correct explanation of (A).

Both (A) and (R) are true, but (R) is not the correct explanation of (A).

(A) is true, but (R) is false.

(A) is false, but (R) is true.

answer is D.

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Detailed Solution

The above statement A is false because floodgate dams are built across inlets where water enters during high tide to produce electricity. Once enough, water flows in after the tide falls outside the floodgate. The water collected within the gate is made to flow out through a pipe that carries it through a power generating turbine.
The above statement R is true because Crossing inlets are floodgate dams. When the gate is closed during high tide, water flows into the inlet and becomes trapped. The water that the floodgate has stored after the tide has gone outflows back to the sea through a pipe after passing through a turbine that produces electricity.

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