When light falls perpendicularly on a shiny surface, the incident angle (i) and the angle of reflection (r) are both zero degrees, following the laws of reflection.
When a ray of light falls perpendicular to a shiny surface, the incident angle (i) is zero degrees. According to the laws of reflection, the angle of incidence is equal to the angle of reflection. Therefore, the reflected ray (r) will also be at zero degrees from the normal.
In this scenario, the incident ray is essentially traveling along the normal to the surface, making the angle of incidence zero. As a result, the reflected ray will also be along the same path, forming an angle of zero degrees with the normal.
Mathematically, we express this relationship as
. The angles are measured with respect to the normal to the surface, and in this case, the incident and reflected rays coincide with the normal.
In summary, when a ray of light falls perpendicularly onto a shiny surface, both the incident angle (i) and the angle of reflection (r) are zero degrees.