Light travels from inside a building to outside through a pane of glass.Which of the following is true regarding the phase change upon reflection in the case? A)A 180^o phase change occurs at the inside surface but not at the outside surface. B)A 180^o phase change occurs at the outside surface but not at the inside surface. C)A 180^o phase change occurs at both the inside surface and the outside surface. D)No phase change occurs at either the inside surface or the outside surface of the glass.

Question

Quizplus · Accepted Answer

When light reflects off a medium that has a higher index of refraction than the medium it is coming from, a 180-degree phase change occurs. Inside the building, the glass has a higher index of refraction than air, so a phase change occurs at the inside surface.

Light Travels from Inside a Building to Outside Through a Pane