Question

Explain why a ray of light passing through the centre of curvature of concave minor gets reflected along the same path. ??
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Answer 1

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The reason why light falling on the center of curvature gets reflected back along the same path is because the angle of incidence and the angle of reflection are along the normal for a concave mirror. This can be proved by drawing a tangent at the point where the light passes through the curvature and makes contact with the mirror. This point of contact would happen at 90 degrees where the radius of curvature is perpendicular to the tangent making the incident ray and the reflected ray coincide with each other. The reason why light falling on the center of curvature gets reflected back along the same path is that the angle of incidence and the angle of reflection are along the normal for a concave mirror. This can be proved by drawing a tangent at the point where the light passes through the curvature and makes contact with the mirror. This point of contact would happen at 90 degrees where the radius of curvature is perpendicular to the tangent making the incident ray and the reflected ray coincide with each other.