Question 5: In the figure below, the three (3) monochromatic light waves coming from the corresponding light sources S, S and S3 interfere at point P on the screen. The three light waves can be expressed as, Ek = Eo sin (kawt + (k-1)o); k = {1,2,3} Also, the point P on the screen is located at y meter above O and about I meters from the three sources of light waves. Show that the intensity at position P is given by, I(y) = 4 [2 cos (244) + 1]* ***** d S3 'F