How to calculate power of a lens 1s +5D .what is th focal length and nature of the lens
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Answered by
1
p=1/f.
f=1/p
then f= 1/5
f=1/p
then f= 1/5
Answered by
1
P=1/f => f=1/P=1/5=0.2m=20cm
Since the sign is + so it is covex lens
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