^ 4) An incident phasor electric filed (x9-y4-26)e surface of a dielectric material, with &, = 2.25, occupying the half-space z≥0. The average power density carried by the wave into the dielectric medium? a. 152.68 W/m² -/(2x+3=) (V/m) in free space upon the planar b. 152.68 mW/m² c. 252.68 W/m² d. none 5) A parallel-polarized beam of light with an electric field amplitude of 10 (mV/m) is incident in air on polystyrene with &, = 26 and 4, = 1. If the incidence angle at the air-polystyrene planar boundary is 600. The reflectivity and transmissivity are respectively? a. 5.1x10 4,999.49 b. 5.1x10,99.949 c. 51x10 4,999.49 transmission of digital data a. diversity, reflection d. none 6) Different modes have different transit times between the two ends of the fiber. This property of optical fibers is called and has the undesirable effect of changing the used for the b. cladding, fiber core c. transit, bandwidth d. none

^ 4) An incident phasor electric filed (x9-y4-26)e surface of a dielectric material, with &, = 2.25, occupying the half-space z≥0. The average power density carried by the wave into the dielectric medium? a. 152.68 W/m² -/(2x+3=) (V/m) in free space upon the planar b. 152.68 mW/m² c. 252.68 W/m² d. none 5) A parallel-polarized beam of light with an electric field amplitude of 10 (mV/m) is incident in air on polystyrene with &, = 26 and 4, = 1. If the incidence angle at the air-polystyrene planar boundary is 600. The reflectivity and transmissivity are respectively? a. 5.1x10 4,999.49 b. 5.1x10,99.949 c. 51x10 4,999.49 transmission of digital data a. diversity, reflection d. none 6) Different modes have different transit times between the two ends of the fiber. This property of optical fibers is called and has the undesirable effect of changing the used for the b. cladding, fiber core c. transit, bandwidth d. none