A light ray is incident on a plane mirror placed in a horizontal plane, making an angle of `30^(@)` with the vertical, then the angle between the refl

A light ray is incident on a plane mirror placed in a horizontal plane, making an angle of `30^(@)` with the vertical, then the angle between the refl
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A light ray is incident on a plane mirror placed in a horizontal plane, making an angle of `30^(@)` with the vertical, ... @)` C. `90^(@)` D. `30^(@)`
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