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A Converging Lens Has Focal Length of 50 Mm. What is the Power of the Lens? - CBSE Class 10 - Science

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Question

A converging lens has focal length of 50 mm. What is the power of the lens?

Solution

Power of a lens is given by: 

Power (P) `=1/f` 

∴`p=1/(50xx10^-3)=1000/50=20.D`

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Solution A Converging Lens Has Focal Length of 50 Mm. What is the Power of the Lens? Concept: Refraction at Spherical Surfaces and by Lenses - Power of a Lens.
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