In Young's double slit experiment, green light is incident on the two slits. The interference pattern is observed on a screen. Which one of the following changes would cause the observed fringes to be more closely spaced?

Question

In Young's double slit experiment, green light is incident on the two slits. The interference pattern is observed on a screen. Which one of the following changes would cause the observed fringes to be more closely spaced?, Reducing the separation between the slits., Using blue light instead of green light., Using red light instead of green light., Moving the screen away from the slits.

MARKS App · Accepted Answer

Fringe width ∝ λ

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