what is the power of concave lens focal length 50cm
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A concave lens has a focal length of 50 cm. Calculate its power. Power of lens = -2 Dioptres. Since the focal length of a concave lens is always negative so power of the concave lens is -2 diopters.
Explanation:
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p = 1
___
f
p = 1
_____
50cn
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