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Exercise 2.3. Think Critically! Instructions: Solve the following problems below and write your answer on a separate sheet of paper. Show your solution. 1. A narrow beam of sodium yellow light, with wavelength 589 nm in vacuum, is incident from air onto a smooth water surface at an angle of incidence of 35.0'. Determine the angle of refraction and the wavelength of the light in water. 26 2. Find the speed of light in (a) flint glass, (b) water, and (c) cubic zirconia 3. A light ray initially in water enters a transparent substance at an angle of incidence of 37.0', and the transmitted ray is refracted at an angle of 25.0". Calculate the speed of light in the transparent substance. 4. Plane-polarized light is incident on a single polarizing disk with the direction of Eo parallel to the direction of the transmission axis. Through what angle should the disk be rotated so that the intensity in the transmitted beam is reduced by a factor of (a) 3.00, (b) 5.00, (c) 10.0? 5. Three polarizing disks whose planes are parallel are centered on a common axis. The direction of the transmission axis in each case is shown in figure below relative to the common vertical direction. A plane-polarized beam of light with E. parallel to the vertical reference direction is incident from the left on the first disk with intensity I = 10.0 units (arbitrary). Calculate the transmitted intensity I when (a) 0, = 20.0', 02 = 40.0', and 0 = 60.0"; (b) 01 = 0', 02 = 30.0", and 0 = 60.0". Figure 2.18 Polarizing disks Physics for Scientists and Engineers, 9th ed Serway, Raymond A. and Jewett Jr., John W. 2013