In a Young's double-slit interference apparatus,the distance from the slits to the screen is tripled.The distance between adjacent light and dark fringes changes by a factor of:
A) 1/9.
B) 1/3.
C) 1.
D) 3.
E) 9.

Question

In a Young's double-slit interference apparatus,the distance from the slits to the screen is tripled.The distance between adjacent light and dark fringes changes by a factor of:
A) 1/9.
B) 1/3.
C) 1.
D) 3.
E) ​9.

Quizplus · Accepted Answer

The fringe spacing in a Young's double-slit experiment is directly proportional to the distance from the slits to the screen. Therefore, if the distance is tripled, the fringe spacing also triples.

In a Young's Double-Slit Interference Apparatus,the Distance from the Slits