Question

the power of the lens is + 2.5D .what kind of ​

Answer 1

ANSWER: The power of the lens is + 2.5D (Convex lens).

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Answer 2

ANSWER: Convex lens

Reason : Power of lens is the ability of lens to converge (or) diverge the rays of light(beam). Since power is taken as "positive" in case the lens is converging and vice versa_ Hence the given lens with power +2.5D is convex(Converging) lens