Science, asked by himeshdohare, 2 months ago

Find the focal length of a lens whose power is -4 D.

Answers

Answered by mahajanridhi18

2

Answer:

-0.25

Explanation:

P= 1/f

so, f=1/P

=1/-4

f= -0.25

Answered by chandgautam64

1

Answer:

f = 1/P = –0.25m

in cm we have

–0.25×100=25cm

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