In a Young experiment, the intensity graph is obtained as shown in the figure. If slit width is 50 nm, screen distance is 1 meter, and the fourth maxima of interference disappears at theta = 0.1001 radian (theta = 0 radian is the center maxima), find:
a) The distance (in cm) of 8th maxima of interference to the center maxima
b) The ratio of intensity at 2nd maxima interference to center maxima