Question

How do you identify the focal point of a Bi-concave lens? Explain with the help of a ray diagram.

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Answer 1

Answer:

When light rays traveling in parallel are bent as they pass through a convex lens, they are bent toward, and thus become focused on, a common point on the opposite side of the lens. This point, F, is called the focal point, and the distance to F from the center of the lens, denoted f, is called the focal length

Explanation:

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