Light is reflecting off a wedge-shaped thin piece of glass producing bright and dark interference fringes. If a certain location has a bright fringe, a nearby point will have a bright fringe if the thickness of the glass increases by:

Question

Quizplus · Accepted Answer

For constructive interference (bright fringe), the path difference must be an integer multiple of the wavelength. An increase in thickness by 1/2 of a wavelength will result in the same condition for constructive interference at a nearby point.

Light Is Reflecting Off a Wedge-Shaped Thin Piece of Glass