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Light Reflection and Refraction
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23/08/2021 8:20 pm
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A lens has a focal length of, -10 cm. What is the power of the lens and what is its nature?
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23/08/2021 8:21 pm
f = -10 cm = -0.1 m
P = \(\frac{1}{f}\) = \(\frac{1}{-0.1}\)
= -10 D
It is a concave lens.