Why does a light ray pass straight through the optical centre of a lens?
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Why the ray of light passing through optical center of a lens passes undeviated while when it passes through other points on the interface of the lens, it gets refracted? Deviation is the change in direction of the ray while passing through the lens.
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Explanation:
The light passes through the clear objects. When a lens is placed in the path of the light it deflects it. But talking about the optical centre you have to look at its curve. The curve of the side from where the light passes through is same as the other side from where the light is expelled out. so the light ray passes straight through the optical centre.
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