In a two-slit interference pattern, the intensity at the peak of the central maximum is I_0.a. At a point in the pattern where the phase difference between the waves from the two slits is 62.0 degrees, what is the intensity? Give your answer as a fraction of I_0. (I/I_0 =)b. What is the path difference for light with a wavelength of 473 nm from the two slits at a point where the phase angle is 62.0 degrees?