Question

The"angle"of"incidence"A)"must"equal"the"angle"of"reflection."B)"is"always"less"than"the"angle"of"reflection."C)"is"always"greater"than"the"angle"of"reflection."D)"may"be"less"than"or"equal"to"the"angle"of"reflection."E)"may"be"greater"than"or"equal"to"the"angle"of"reflection."

Answer 1

A) must equal angle of reflection

Step-by-step explanation:

"The angle of incidence is equal to the angle of reflection". This is true according to the first law of reflection. For this to be totally true, the plane surface in consideration must be a smooth surface. Since it is a law, it cannot be changed because it has been proved to be true.

Note that the angle of incidence is the angle between the incidence ray and the normal ray(this ray is perpendicular to the surface) while the angle of reflection is the angle between the reflected ray and the normal.