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

ConceptPower of a Lens

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.

Is there an error in this question or solution?

APPEARS IN

 NCERT Science Textbook for Class 10 (with solutions)
Chapter 10: Light - Reflection and Refraction
Q: 16 | Page no. 186

Reference Material

Solution for question: Find the focal length of a lens of power -2.0 D. What type of lens is this? concept: null - Power of a Lens. For the course CBSE
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