A ray of light is incident on the plane mirror at rest. The mirror starts turning at a uniform angular acceleration of π rad.s^

A ray of light is incident on the plane mirror at rest. The mirror starts turning at a uniform angular acceleration of π rad.s^–2 . The reflected ray at the end of 1/4 must have turned through

(A) 90°

(B) 45°

(D) 11.25°

A ray of light is incident on the plane mirror at rest. The mirror starts turning at a uniform angular acceleration of π rad.s^–2 .

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