Question

Which of the following is true about the incident ray, the reflected ray and the normal?

• A. They lie in the planes that are perpendicular to each other.
• B. They lie in the planes that are parallel to each other.
• C. They all lie in the same plane.
• D. They lie in the planes that are at an angle of ${60}^{\circ }$ with each other.

Answer 1

The correct option is C They all lie in the same plane.

From the laws of reflection, we know that the incident ray, the reflected ray and the normal all lie in the same plane.