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A ray of light travelling in the direction (1+33) is incident on a plane mirror. After reflection, it travels along the direction (i-3). The

A ray of light travelling in the direction (1+33) is incident on a plane mirror. After reflection, it travels along the direction (i-3). The angle of incidence is (A) 30 (C) 60 (B) 45 (D) 75

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