Question

what happens when light passes along normal to surface?​

Answer 1

Answer:

When light passes from a less dense to a more dense substance, (for example passing from air into water), the light is refracted (or bent) towards the normal. The normal is a line perpendicular (forming a 90 degree angle) to the boundary between the two substances

Answer 2

Answer:

when light passes normally on any surface it gets reflected back on the same angle (90degrees) and it doesent bend

Also it depends on the surface and color of the object which it is touching