Verified Answer :

An imaginary line perpendicular to a reflecting surface is called "a normal" (principle line)

So, Your Answer would be Option B

Hope this helps!

facundo3141592

An imaginary line perpendicular to a reflecting surface is called a normal.

In geometry, we define the normal of a surface as a vector or a ray that is perpendicular to the surface. (Or a vector that is orthogonal to all the tangent lines to the surface)

The normal can have different lengths, it can be a unit vector (of module 1) or a general vector, so the only thing that defines a normal vector is its perpendicularity to a given surface.

Thus, the imaginary line perpendicular to a reflecting surface is called a normal. Thus the correct option is b.

If you want to learn more, you can read:

https://brainly.com/question/2513251

Related Questions