Science, asked by kajal5952, 6 months ago

A concave lens has a focal length 20 cm
Calculate its power.
please explain properly

Answers

Answered by akankshapadave2004

0

Answer:

thanks for points bro.

Answered by sujathavin

1

Answer: P=- 5D

Explanation:

given : f=-20 cm
we know p=100/f [when f is in cm]
p=100/-20= -5D[dioptre]

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