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Light Reflection and Refraction
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23/08/2021 4:14 pm
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A converging lens has a focal length of 50 mm. What is the power of the lens?
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23/08/2021 4:16 pm
f = 50 mm = 0.05 m
P = \(\frac{1}{f}\) = \(\frac{1}{0.05}\)
= +20 D.