Aray of light that strikes a surface is known as?

a. incident angle
b. reflection angle
c. reflection ray
d. incident ray

A ray of light that strikes a surface is known as the incident ray.  (d)

In the physics of optics, it has been defined that the incident rays are the rays which strikes the surface.

Answer : Option D

Explanation:

When the ray of light strikes the surface it is know as ''incident ray''. The angle which it makes with the normal or the perpendicular imagined or drawn to the surface is the ''incident angle''.

According to the ''Law of Reflection'', the incident ray after striking the surface is reflected back, the ray which leaves the surface is called the ''Reflected Ray''. The angle which is made between the same normal and reflected ray is the reflected angle.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .