A point on the principal axis of a lens such that a ray of light passing throughthis point emerges parallel to its direction of incidence is called as
Question
Solution 1
The point you're referring to is known as the "Principal Focus" or simply "Focus" of a lens. Here's the step-by-step explanation:
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When a ray of light passes through a lens, it bends due to refraction.
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The principal axis of a lens is the imaginary line passing through the center of the lens.
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