The intensity from each of the two slits in Young's double-slit experiment is

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

Problem

I_0

. Calculate the minimum separation between two points on the screen where the intensities are

2I_0

and

I_0

, respectively. The fringe width is

\beta

. (1)

\frac{\beta}{4}

(2)

\frac{\beta}{3}

(3)

\frac{\beta}{12}

(4) None of these