PHYS 202 Midterm: PHYS 202 TAMU 202s09 Exam 3
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No work need he shown and no partial credit will be given. (5 pts) 1. Light that is initially unpolarized and with initial intensity 1 passes through two polarizing filters. The angle between the polarizing axis of the first and second filter is 45 . What is the intensity of the light after it has passed through the second filter? (a) zero (b) 0. 711o (c) 0. 501 (d) 0. 251o (e) o (f) none of the above answers (5 pts) 3. A ray of light traveling in material a strikes the interface between materials. 1. 50) is incident on the flat surface of a piece of (5 pt. s) 4. It is found that if the light in the benzene is incident at an angle with respect to the normal to the surface of the plastic that is greater than 60 . none of the light passes into the plastic.
