Monochromatic plane waves of light are incident normally on a single slit. Which one of the five figures below most correctly shows the diffraction pattern observed on a distant screen?
A) I
B) II
C) III
D) IV
E) V

Question

Monochromatic plane waves of light are incident normally on a single slit. Which one of the five figures below most correctly shows the diffraction pattern observed on a distant screen? 
A) I 
B) II 
C) III 
D) IV 
E) V

Quizplus · Accepted Answer

The diffraction pattern produced by a single slit is a central bright band flanked by an alternating series of bright and dark bands, called fringes. This pattern corresponds to option B.

Monochromatic Plane Waves of Light Are Incident Normally on a Single