Question

if Power of lens is -2.5 D find the nature of lens

Answer 1

Power of the lens is -2.5.its power is negative. It means that the lens is concave.

Answer 2

NOTE:-

IF THE POWER OF LENS IS NEGATIVE(-),THEN IT IS A CONCAVE LENS.

IF THE POWER OF LENS IS POSITIVE(+),THEN IT IS A

CONVEX LENS.

HERE,THE POWER IS NEGATIVE(-)

-2.5D......then it is a concave lens.

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