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Solution for Find the focal length of a lens of power -2.0 D. What type of lens is this? - CBSE Class 10 - Science

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Question

 Find the focal length of a lens of power -2.0 D. What type of lens is this?

Solution

Power of lens, P= 1/
P= -2D
f= -1/2 = -0.5 m
A concave lens has a negative focal length. Hence, it is a concave lens.

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APPEARS IN

 NCERT Science Textbook for Class 10 (with solutions)
Chapter 10: Light - Reflection and Refraction
Q: 16 | Page no. 186
Solution for question: Find the focal length of a lens of power -2.0 D. What type of lens is this? concept: Refraction at Spherical Surfaces and by Lenses - Power of a Lens. For the course CBSE
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