102
Question
Two plane mirrors. A and B are aligned parallel to each other, as shown in
the figure. A light ray is incident at an angle of 300 at a point just inside one
end of A. The plane of incidence coincides with the plane of the figure. The
maximum number of times the ray undergoes reflections (including the first
one) before it emerges out is
[IIT-JEE (Screening) 2002]
Two plane mirrors. A and B are aligned parallel to each other, as shown in
the figure. A light ray is incident at an angle of 300 at a point just inside one
end of A. The plane of incidence coincides with the plane of the figure. The
maximum number of times the ray undergoes reflections (including the first
one) before it emerges out is
[IIT-JEE (Screening) 2002]
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Solution
The correct option is B 30
From the following ray diagram
30
From the following ray diagram
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1
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