Question

Which of the following does not lie in the plane of the reflection?
A) Reflecting surface
B) Incident ray
C) Normal at the point of incidence
D) Reflected ray

Answer 1

Hint
As we all know that second law of reflection:
Second law of reflection states that incident ray, reflected ray, normal and the point of incident all lie in the same plane.

Complete step-by-step answer:
As we all know that second law of reflection state that -
Second law of reflection states that incident ray, reflected ray, normal and the point of incident all lie in the same plane.
So from this we can understand that, incident ray, reflected ray and the normal at the point of incidence all these things are laying on the same plane.
But on considering the option (A) reflecting surface, it does not lie on the plane of reflection because reflecting surface is perpendicular to the plane of reflection or reflecting the surface makes $90^0$ with the plane of the reflection.
Correct option is (A).

Note
The first law reflection states that the angle of reflection is equal to the angle of incident.
Numerically it can be written as
$angle(i) = angle(r)$
Optics is the branch of physics that studies the behavior of the properties of the light, including its interaction with matter and the construction of the instrument that uses or detects it. Optics usually describe the behavior of the visible, ultraviolet and infrared light. Optics began with the development of the lenses by the ancient scientist. The earliest known lenses made from the polished crystals.
There are two kinds of the optics
1) Classical optics
2) Modern optics