5. (3 points) Which of the following is NOT true for electromagnetic waves? (a) they transport energy (b) they transport momentum (e) they consist of changing electric and magnetic fields they travel at different speeds in vacuum, depending on their frequency (e) they can be reflected 6. (3 points) We perceive frequency for sound wave as pitch. What do we perceive frequency for light waves? Color (b) Brightness (c) Opacity (d) Shininess 7. (3 points) Unpolarized light passes through a single polarizer with an intensity of 10.00 mW/m What is the intensity of the light upon exiting the polarizer? (a) 2.50 mW/m (b) 5.00 mW/m (c) 7.50 mW/m (d) 10.00 mW/m 8. (3 points) Which property of a light wave does not change as the wave passes from one trans- parent medium to another: (a)) Frequency (b) Wavelength (c) Phase velocity (d) Amplitude 9. (3 points) Considering what you would observe on a nice day, which color of light do you think scatters most in the atmosphere? Blue (b) Red (c) Yellow (d) White (all colors scatter the same) 10. (3 points) The physical phenomenon that makes fiber optic signal transmission possible is (a) Dispersion (b) Polarization by reflection (c) Small angle refraction Total internal reflection