What is focal length of convex lens?

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What is focal length of convex lens?

Devu Shivu 14th Feb, 2020

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TANUJ JAIN 15th Feb, 2020

Focal length of a convex lens is the distance between the pole (center of the lens) and the focal point (the point where all parallel rays of light meet after converging from the lens).

Focal length of a particular lens is constant.

Thank You.

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