The fringe width in an experiment is

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

Problem

β = 0.20\,\text{mm}

. How many dark fringes are obtained between the central maximum and a point

5.2\,\text{mm}

away from it on one side of the centre? (a) 27 (b) 26 (c) 24 (d) 25