A double-slit experiment initially uses light of wavelength

PHYSICS · Single correct · CBSE · Physics · Wave Optics · Wave Optics

Problem

500\,\text{nm}

, a slit separation of

0.30\,\text{mm}

, and a screen distance of

1.5\,\text{m}

. If the slit separation is increased to

0.40\,\text{mm}

while all other parameters stay the same, the new fringe spacing on the screen will (a) increase by

33\%

. (b) decrease by

25\%

. (c) decrease by

33\%

. (d) decrease by

44\%