In a double-slit experiment,the distance from the slits to the screen is decreased by a factor of 2.If the distance between the fringes is small compared with the distance from the slits to the screen,the distance between adjacent fringes
A)increases by a factor of 2.
B)increases by a factor of 4.
C)depends on the width of the slits.
D)decreases by a factor of 2.
E)decreases by a factor of 4.

Question

Quizplus · Accepted Answer

The distance between adjacent fringes in a double-slit experiment is directly proportional to the distance from the slits to the screen. Therefore, if the distance from the slits to the screen is decreased by a factor of 2, the distance between adjacent fringes decreases by the same factor.

In a Double-Slit Experiment,the Distance from the Slits to the Screen