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Explain the Following Term Related to Spherical Lenses:- Principal Focus - Science

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Explain the following term related to spherical lenses:- principal focus

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Solution

Principal Focus:-

The convex lens converge the rays incident on it after refraction, to a point on the principal axis. This point is known as principal focus of the convex lens. The rays incident on concave lens appear to diverge from a point on the principal axis. This point is known as the principal focus of concave lens.

Concept: Spherical Mirrors
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