In a Young's double-slit interference apparatus,by what factor is the distance between adjacent light and dark fringes changed when the separation between slits is tripled?
A) 1/9
B) 1
C) 3
D) 1/3

Question

Quizplus · Accepted Answer

The fringe spacing in a double-slit experiment is inversely proportional to the slit separation. Tripling the slit separation reduces the fringe spacing by a factor of 1/3.

In a Young's Double-Slit Interference Apparatus,by What Factor Is the Distance