In a double-slit experiment a laser produces bright fringes that are apart on a…
PHYSICS · Single correct · A Level · Physics · Waves · Waves
Problem
In a double-slit experiment a laser produces bright fringes that are 2.0mm apart on a screen 1.0m away. Which single modification would reduce the fringe spacing to 1.0mm while all other quantities remain unchanged?
(a) Double the separation between the two slits
(b) Halve the separation between the two slits
(c) Double the distance between the slits and the screen
(d) Reduce the width of each slit by half