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Class 10 Science Medium Mcq English Medium

The power of a lens is defined as the

Question
The power of a lens is defined as the
square of its focal length
reciprocal of its focal length
product of its focal length and aperture
sum of its focal length and radius of curvature
Answer
reciprocal of its focal length
Detailed Explanation
The chapter defines the power of a lens as the reciprocal of its focal length: P = 1/f.
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