In a Young's double-slit experiment

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

Problem

In a Young's double-slit experiment, the slit separation is

2.0\ \text{mm}

, the wavelength of light is

600\ \text{nm}

, and the screen is

2.0\ \text{m}

from the slits. If the intensity at the centre of the central maximum is

0.20\ \text{W m}^{-2}

, what is the intensity at a point

0.5\ \text{cm}

from this centre along the width of the fringes? (a)

0.06\ \text{W m}^{-2}

(b)

0.05\ \text{W m}^{-2}

(c)

0.04\ \text{W m}^{-2}

(d)

0.03\ \text{W m}^{-2}