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Light Reflection and Refraction
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23/08/2021 8:22 pm
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The focal length of a lens is +150 mm. What kind of lens is it and what is its power?
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23/08/2021 8:23 pm
f = +150 mm = +0.15 m
It is a convex lens since its focal length is positive.
P = \(\frac{1}{f}\) = \(\frac{1}{0.15}\)
= +6.66 D