(b) When drop falls first velocity increases, hence first KE also increase. After sometime speed (velocity) is constant this is called terminal velocity, hence, KE also become constant. PE decrease continously as the drop is falling continously. The variation in PE and KE is best represented by (b).

Correct Answer – B
At a height h above the ground, PE of raindrop is maximum and KE = 0. As the raindrop falls its PE goes on decreasing and KE goes on increasing up to a point `h/4`above the ground. At this stage, rain drop has acquired near terminal velocity (= constant). Therefore, at this stage. KE tends to be constant. PE becomes zero when raindrop falls to the ground. Hence, option (b) is most appropriate

Correct Answer – B
When drop falls first velocity increases, hence, first `KE` also increases. After sometime speed (velocity) is constant this is called terminal velocity, hence, `KE` also become constant. `PE` decreases continuosly as the drop is falling continuosly. The variation in `PE` and `KE` is best represented by `(b)`.