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Calculate the Focal Length of a Corrective Lens Having Power +2d. - Science and Technology 1

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Calculate the focal length of a corrective lens having power +2D.

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Solution

Given: Focal length f = +2 D
Power ,p=1/f

∴f=1/p=1/2

∴f=0.5m
The power of the corrective lens is 0.5 m.

Concept: Power of a Lens
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