Monochromatic light passes through a double-slit apparatus, creating an interference pattern on a screen. If the distance between the slits is decreased, what happens to the spacing between the bright fringes on the screen?
✓ Correct Answer: Option C
The fringe spacing in a double-slit interference pattern is given by Δx = λL/d, where d is the slit separation. If d decreases, Δx must increase.