The power of a lens is +8D. What kind of lens is this?

Convex

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Concave

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Concavo Convex

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Convexo concave

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Solution

The correct option is A Convex
Power of a lens is positive then it is convex lens as Power of a lens is defined as
$P = \frac{1}{f o c a l l e n g t h i n m e t e r s}$
and focal length of convex lens is positive and focal length of concave lens is negative.

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