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What is the unit of power of a lens? Define the unit of power of a lens.

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Question

 What is the unit of power of a lens? Define the unit of power of a lens. 

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Solution

The unit for the power of a lens is a dioptre (D). One dioptre is the power of a lens whose focal length is 1 metre.

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Chapter 2: Refraction of Light - Exercise 7 [Page 262]

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Lakhmir Singh Physics [English] Class 10
Chapter 2 Refraction of Light
Exercise 7 | Q 29.2 | Page 262
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