In the figure, two isotropic point sources S1 and S2 emit light in phase at wavelength A and at the same amplitude. The sources are separated by distance 2d = 3.0O A. They lie on an axis that is parallel to an x axis, which runs along a viewing screen at distance D = 20.0 A. The origin lies on the perpendicular bisector between the sources. The figure shows two rays reaching point P on the screen, at position Xp. (a) At what value of xp do the rays have the minimum possible phase difference? (b) What multiple of A gives that minimum phase difference? (c) At what value of xp do the rays have the maximum possible phase difference (show "-1" if infinity)? What multiple of A gives (d) that maximum phase difference and (e) the phase difference when xp = 3.00 A? P. Screen - D (a) Number i Units (b) Number i Units (c) Number i Units (d) Number i Units (e) Number i Units

In the figure, two isotropic point sources S1 and S2 emit light in phase at wavelength A and at the same amplitude. The sources are separated by distance 2d = 3.0O A. They lie on an axis that is parallel to an x axis, which runs along a viewing screen at distance D = 20.0 A. The origin lies on the perpendicular bisector between the sources. The figure shows two rays reaching point P on the screen, at position Xp. (a) At what value of xp do the rays have the minimum possible phase difference? (b) What multiple of A gives that minimum phase difference? (c) At what value of xp do the rays have the maximum possible phase difference (show "-1" if infinity)? What multiple of A gives (d) that maximum phase difference and (e) the phase difference when xp = 3.00 A? P. Screen - D (a) Number i Units (b) Number i Units (c) Number i Units (d) Number i Units (e) Number i Units