In Young's double slit experiment, the separation between the slits is halved and the distance between…

In Young's double slit experiment, the separation between the slits is halved and the distance between the screen is doubled. The fringe width is
  1. Unchanged
  2. Halved
  3. Doubled
  4. Quadrupled

Solution

Fringe width, β=Dλd

⇒β2β1=D2D1×d1d2

⇒β2β1=2DD×2dd

⇒β2β1=4

⇒β2=4β1

Asked in: AP EAMCET 2021 (19 Aug Shift 2)

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