Question

When a plane mirror is rotated through an angle of $5^{\circ }$, the reflected ray is rotated through an angle of ___.

• A. $5^{\circ }$
• B. ${10}^{\circ }$
• C. ${15}^{\circ }$
• D. None of these

Answer 1

The correct option is B ${10}^{\circ }$

As can be seen in the image below, when the mirror is rotated through an angle of $5^{\circ }$, the reflected ray is rotated by ${10}^{\circ }$.
Here, theta(θ) represents the angle of rotation of the mirror.