Question

On a plane mirror, a ray of light is incident at an angle of 30° with horizontal. To make the
reflected ray vertical, at what angle with horizontal must a plane mirror be placed ?
(A) 30"
(B) 60
309
530"
(C) 45°
(D) 54°​

Answer 1

Answer:

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Answer 2

Answer:

Solution : To make the reflected ray vertical, it should be rotated through and angle of 60∘, So, the mirror should be tilted by 60∘/2=30∘ , as shown in Fig (b).