Question

The Power of a lens is + 25o. what kind of lens
it is and what is focal length?​

Answer 1

Answer:

it's convex lens because it is in positive sign focal length is 0.04

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Answer 2

Power = 1/2 focal length

25 = 1/2 × f

50 = f

f = 50 cm or 0?5 metre

and the lens is convex