In YDSE, coherent monochromatic light of wavelength falls on the slits. The…

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

Problem

In YDSE, coherent monochromatic light of wavelength

600\ \text{nm}

falls on the slits. The first-order bright fringe is at

4.84\ \text{mm}

from the central maximum. Determine the wavelength for which the first-order dark fringe is observed at the same location on the screen. Take

D=3\ \text{m}

. (1)

600\ \text{nm}

(2)

1200\ \text{nm}

(3)

300\ \text{nm}

(4)

900\ \text{nm}