In Young’s double-slit experiment, the separation between the slits is halved and the distance between the slits and the screen is doubled. The fringe width will

Question

In Young’s double-slit experiment, the separation between the slits is halved and the distance between the slits and the screen is doubled. The fringe width will, remain the same, be halved, be doubled, be quadrupled

MARKS App · Accepted Answer

The fringe width in Young’s double-slit experiment β = λD d where λ is the wavelength of light used D is the distance between slit and screen. d is the distance between the slit. ∴ β ' = λ ( 2 D ) d 2 = 4 λD d = 4 β

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