In: Physics
We can define the plane of incidence as the plane defined by the incident beam and the normal to the surface of the transparent chamber. Based on your observations, is the reflected beam also in this plane? Explain how you reached your conclusion.
Plane of Incidence:- The plane of incidence is the plane that contains the incident ray and the normal (ON, a line perpendicular to the surface) to the plane of the surface such that they intersect at the surface.
Most of the waves of the incident ray will be transmitted across the boundary (eg - the surface of the water or glass) as a refracted ray making an angle r with the normal, the rest being reflected
The law of reflection states that the incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane. Furthermore, the angle of reflection is equal to the angle of incidence . Both angles are measured with respect to the normal to the mirror.
Hence We can clearly see that the reflected ray is also in the same plane as the incident ray.