Physics

Problem

In a Young's double slit experiment the intensity at a point where the path difference is

\frac{\lambda}{6}

(

\lambda

being the wavelength of light used) is

I

. If

I_0

denotes the maximum intensity,

\frac{I}{I_0}

is equal to [2007] (a)

\frac{3}{4}

(b)

\frac{1}{\sqrt{2}}

(c)

\frac{\sqrt{3}}{2}

(d)

\frac{1}{2}