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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The light falling on the center of curvature is reflected back along the same path because the incident ray falls on the mirror along the normal to the reflecting surface
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Answer: A ray of light passing through the centre of curvature of a concave mirror retraces its path (gets reflected along the same path), because as the ray of light passes through centre of curvature of a concave mirror it strikes the mirror along the normal i.e. it incidences on to the mirror at 90 degree. Hence the incident ray coincides with the normal. Therefore angle of incidence = 0 so, as we know according to law of reflection angle of reflection = 0, hence the angle of reflection too become zero degree, thus ray of light retraces its path.
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