Is it true that a ray of light passing through the centre of curvature of a concave mirror gets reflected back along the same path?

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True

False

answer is A.

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Detailed Solution

The above statement is True.
As the angle of incidence is

0^{0}

, so the ray passing through the centre of curvature is incident normally to the mirror. And also, the angle of reflection is zero. This point of contact would meet at

90^{0}

, where the radius of curvature is perpendicular to the tangent making the incident ray and the reflected ray coincide with each other.
The ray of light passes through the centre of curvature of a concave mirror, strikes the mirror along the normal ray, it incident upon the mirror at an angle of

90^{0}

. Hence, the incident ray coincides with the normal.

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