When light passes through two or more narrow slits,an alternating dark and bright pattern is observed on a screen because of
A)interference.
B)diffraction.
C)specular reflection.
D)diffuse reflection.
E)polarization.

Question

Quizplus · Accepted Answer

The alternating dark and bright pattern observed on the screen is due to the interference of the light waves passing through the different slits. As the waves interfere constructively or destructively, bright and dark fringes are produced. Diffraction can also contribute to the pattern, but it is the interference of the waves that produces the fringes. The other options (specular reflection, diffuse reflection, polarization) are not relevant to the phenomenon observed in this situation.

When Light Passes Through Two or More Narrow Slits,an Alternating