# Find the power of a convex lens of focal length of + 25 cm. - Science and Technology 1

Numerical

Find the power of a convex lens of focal length of + 25 cm.

#### Solution

Given: Focal length (f) = 25 cm = 0.25 m

To find: Power of the lens (P)

Formula: P = 1/("f"("m"))

Calculation: From formula, P = 1/0.25 = 4 D

The power of the convex lens is 4 D.

Concept: Power of a Lens
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