In Young's double slit experiment using monochromatic light of wavelength λ, the intensity of light at a point on the screen where the path difference is \(λ \over 3\), is I0. What is the intensity of light at a point where the path difference is λ?
1
2 I0
2
4 I0
3
\(I_0 \over 2\)
4
\({\sqrt3 \over 2} I_0\)