What you mean by focal point of spherical refracting surface
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Explanation:
The refracted ray passes through the focal point. • A ray that passes through the focal point. – The refracted ray is parallel to the central axis. • A ray that passes through the center of curvature.
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when the length scales are >> than the lights wevalenthg ,... 1 .virtual n 1 n 2 . refracting surface formula .
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