Monochromatic light of wavelength falls on two narrow slits separated by

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

Monochromatic light of wavelength

600\,\text{nm}

falls on two narrow slits separated by

0.30\,\text{mm}

. The interference pattern is observed on a screen

1.2\,\text{m}

away from the slits. Calculate the fringe width

β

. (a)

0.24\,\text{mm}

(b)

2.4\,\text{mm}

(c)

1.2\,\text{mm}

(d)

4.8\,\text{mm}