Question

Example 1 :
A plane mirror is inclined at an angle o with horizontal as shown in figure.
If a ray incident from 10° above horizontal becomes vertical after reflection
from this mirror, then find 0.

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Answer 1

Answer:

The value of θ is 90°

Explanation:

You can solve it by drawing reflected ray and the dotted line is its normal to it is perpendicular to the mirror.