3. Light passes from one glass (n, = 1.48) into 12. another (n2 = 1.52). Find the angle of refraction for incident angles of 12, 24, 13. and 48. 4. For light passing from air into a glass with a refractive index of 1.525, at what 14. incident angle is the refracted angle 30? 5. Find the critical angle as seen by a fish underwater. 6. For a glass surface (n = 1.51) in air, find 15. the Fresnel reflection for light incident on the glass. 7. A glass plate is 1-cm thick and has a refrac- tive index of 1.52. Assuming only one 16 reflection at each interface, what is the maximum fraction of incident light that passes through the glass plate in air? Note: 17 Assume no absorption in the glass. 8. A wave propagating in air has an electric field amplitude of 20 V/m at a wavelength of 1310 nm. Find the frequency, period, and wavenumber, and write the equation 18 for the wave. 9. The electric field of an electromagnetic wave is described by 19 E = 40sin (1.36x1014)t-(9.66x106)z]