A ray of light is incident on a plane mirror at an angle of $60^{\circ}$. The angle of deviation produced by the mirror is
Show Hint
- $120^{\circ}$
- $30^{\circ}$
- $60^{\circ}$
- $90^{\circ}$
The Correct Option is C
Solution and Explanation
Angle of deviation $\delta = 180^{\circ} - (i + r)$.
Step 2: Reflection Law
For a plane mirror, $i = r$. Given $i = 60^{\circ}$, then $r = 60^{\circ}$.
Step 3: Calculation
$\delta = 180^{\circ} - (60^{\circ} + 60^{\circ}) = 180^{\circ} - 120^{\circ} = 60^{\circ}$.
Final Answer: (c)
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