Find the power of a concave lens of focal length 2 m.
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Answer:Find the power of a concave lens of focal length 2m. Thus, the power of this concave lens is, -0.5 dioptre.
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Given, Focal length = 2m
Power of lens= Reciprocal of focal length
Explanation:
i.e D = 1/f
=1/2
=0.5
power of lens (D)=0.5
( Where (D) is Dioptre)
The unit of power of lens is Dioptre.
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