asseration: a ray of light incident along the normal to the plane mirror retraces its path after reflection from mirror
reason: a ray of light along the normal as a angle of incidence as n/2 and hence it retraces it's own path after reflection from mirror
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Explanation:
A ray incident along normal to the mirror retraces its path is true because during reflection, angle of incidence is always equal to angle of reflection which is 0o
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