1.

A ray of light is incident at 50° on the middle of one of the two mirrors arranged at an angle of 60° between them. The ray then touches the second mirror, get reflected back to the first mirror, making an angle of incidence of [MP PET 2005]

A. \[50{}^\circ \]
B. \[60{}^\circ \]
C. \[70{}^\circ \]
D. \[80{}^\circ \]
Answer» D. \[80{}^\circ \]


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