Question

3. Focal length of a convex lens is 20 cm. Its power is

a. +5 D b. – 5 D c. +0.05 D d. –0.05 D​

Answer 1

Answer:

a is the correct answer please mark me brainliest

Answer 2

✌️ Hey mate ✌️

Here's the answer :

$\red{P = 5 \: \: D}$

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