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Solution for Find the Focal Length of the Lens. is the Prescribed Lens Diverging Or Converging? - CBSE Class 10 - Science

Question

A doctor has prescribed a corrective lens of power +1.5 D. Find the focal length of the lens. Is the prescribed lens diverging or converging?

Solution

Power of lens, P= 1/f
P= 1.5D
f= 1/1.5 = 10/15 = 0.66 m
A convex lens has a positive focal length. Hence, it is a convex lens or a converging lens.

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APPEARS IN

 NCERT Science Textbook for Class 10 (with solutions)
Chapter 10: Light - Reflection and Refraction
Q: 17 | Page no. 186
Solution for question: Find the Focal Length of the Lens. is the Prescribed Lens Diverging Or Converging? concept: Refraction at Spherical Surfaces and by Lenses - Power of a Lens. For the course CBSE
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