In a two-slit interference pattern, the intensity at the peak of the central maximum is I0 . (a) At a point in the pattern where the phase difference between the waves from the two slits is 60.0, what is the intensity? (b) What is the path difference for 480 nm light from the two slits at a point where the phase difference is 60.0?

In a two-slit interference pattern, the intensity at the peak of the central maximum is I0 . (a) At a point in the pattern where the phase difference between the waves from the two slits is 60.0, what is the intensity? (b) What is the path difference for 480 nm light from the two slits at a point where the phase difference is 60.0?