Coherent Light Of Wavelength 501

Coherent light of wavelength 501.5 nm is sent through two parallel slits in a large flat wall. Each slit is 0.700 /m wide. Their centers are 2.80 /m apart. The light then falls on a semi cylindrical screen, with its axis at the midline between the slits.
(a) Predict the direction of each interference maximum on the screen, as an angle away from the bisector of the line joining the slits.
(b) Describe the pattern of light on the screen, specifying the number of bright fringes and the location of each.
(c) Find the intensity of light on the screen at the center of each bright fringe, expressed as a fraction of the light intensity Imax at the center of the pattern.

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