let L=1.20m and d=0.120mm and assume the slit system is illuminated with momochromatic 500-nm light. Calculate the phase difference between the two wave fronts arriving at P when
(a) theta=0.500 degrees and
(b) y=5.00 mm.
(c) What is the value of theta for which the phase difference is .333 rad?
(d) What is the value of theta for which the path difference is lambda/4?