Question

the power of lens is 2.0D. Find the focal length of the lens in meter.​

Answer 1

Answer:

0.5 meters.

Explanation:

Use the formula

$f = \frac{1}{d} \\ = > f = \frac{1}{2} \\ = > f = 0.5m$

Thus you get the answer f=0.5 m

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