Question

a convex lens has 4 dioptre power .find out the focal length?


pls give me a right answer.
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Answer 1

Answer:

0.25 m

Explanation:

The relation between lens focal length and its power is

Focal length (m) =1/power(m^-1)

= 1/4

= 0.25 meter

Mark it as BRAINLIEST

Answer 2

Answer:

Focal length = $\frac{1}{power}$

                     = $\frac{1}{4}$

                     = 0.25 m