What is the focal length of a lens having power – 4 D? plzz answer asap
Answers
Answered by
0
Answer:
p=100/f (in cm)
here
power. is 4
4=100/f
f=100/4
f=25 cm
Answered by
1
Answer:
-0.25 m is the ans
Explanation:
power=1/focal length
so,1/-4
=0.25m
I hope this ans helps you understand
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