Two waves of light in air, of wavelength 600.0 nm, are initially in phase. They then travel through plastic layers as shown in the figure below, with L1 = 3.92 um, L2 = 3.37 um, n1 = 1.41, and n2 = 1.64. What multiple of / gives their phase difference after they have both emerged from the layers? Give absolute value. - 12 712 L1 Number Units This answer has no units e Textbook and Media (degrees) nm kg GO Tutorial S m/s m/s^2 Save for Later Attempts: 0 of 3 used Submit Answer N L W Hz