when why A Ray of light passing through a centre of curvature of a concave mirror gets reflected along the same path
Question
when why A Ray of light passing through a centre of curvature of a concave mirror gets reflected along the same path
Solution
A ray of light passing through the center of curvature of a concave mirror gets reflected along the same path due to the following reasons:
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The center of curvature (C) of a concave mirror is the point at the center of the sphere from which the mirror is cut. This point lies on the principal axis of the mirror.
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When a ray of light passes through the center of curvature, it strikes the mirror surface at a 90-degree angle (normal incidence). This is because the line joining the center of curvature and any point on the mirror is always normal to the mirror at that point.
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According to the law of reflection, the angle of incidence is equal to the angle of reflection. In this case, since the angle of incidence is 0 degrees (the ray is incident normally to the mirror surface), the angle of reflection is also 0 degrees.
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Therefore, the ray of light gets reflected along the same path.
This is a special case of light reflection by a concave mirror and is one of the important ray diagrams while studying the image formation by concave mirrors.
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