Explain why a ray of light passing through the centre of curvature of a
concave mirror gets reflected along the same path.
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Explanation: because it makes zero degree from the normal
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A line joining the centre of curvature to any point on the surface of mirror is always normal to it.Thus a Ray passing through the centre of curvature is incident normally on the sperical mirror.Its angle of incidence is zero therefore the angle of reflection is also That's why The light Ray retraces its own path.
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