Science, asked by sahilgorane, 5 months ago

The power of a lens with focal length 20 cm is _____ D.

Answers

Answered by chaitalibhowmik12345

0

Answer:

power =

$\frac{1}{f(in \: m)} = \frac{1}{0.20} = \frac{100}{20} = 5$

The ans is 5D.

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