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Two plane mirrors are inclined at an ang...

Two plane mirrors are inclined at an angle of `50^@`. A ray is incident on one of the mirrors with certain angle of incidence. The reflected ray from this mirror is incident on the second mirror such that it gets reflected parallel to the first mirror. Find the angle of incidence at the two mirrors. Also show that the sum of angles of incidence on first and second mirrors is equal to the angle of inclination between the two mirrors.

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(i) Draw a ray diagram.
(ii) Using a ray diagram, find the incident rays of the light ray on two mirrors and also find the sum of these incident rays.
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