Physics, asked by mahadev560, 10 months ago

If the focal lenght of a concave lens is 4metre, its power is...?

Answers

Answered by vikrantmishra2115hsj

0

p=1/f
then by formula

p=1/4

mahadev560: wat about signs....? positive or negative....?

vikrantmishra2115hsj: focus never be negative it magnitude

vikrantmishra2115hsj: positive always

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