Monochromatic light of wavelength falls on two parallel slits separated by

PHYSICS · Multi-part · CBSE · Physics · Wave Optics · Wave Optics

Problem

Monochromatic light of wavelength

\lambda = 540\,\text{nm}

falls on two parallel slits separated by

d = 0.15\,\text{mm}

. A screen is placed

D = 2.0\,\text{m}

away from the slits. Solve the following parts. (i) Find the angular position

\theta

of the

5^\text{th}

dark fringe with respect to the central maximum. (ii) Calculate the linear distance of this

5^\text{th}

dark fringe from the central bright fringe on the screen. (iii) Determine the fringe width for the given arrangement.