Find the power of the concave lens of focal length is 2m
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Step-by-step explanation:
This is the required answer to the question that the power of the concave lens of focal length 2m is -0.5D. Note: 1. The units of power of a lens are dioptres (D). One dioptre is equal to the inverse of the unit of length.
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power of concave lens (p)=-1/f
= -1/2
= -0.5D
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