1. Quizdom Intro Press and hold “menu” to turn on Session ID: 104884 User ID: your student ID (or try a number 1-12 if you are not registered) To input, press the “send” key (double arrow) If this does not work, press “menu” and then use the arrows to find and change session or user manually

2. Quizdom Practice Do I need to show work for calculation problems and justify answers for verbal questions? A.Always B.Always when Dr. Vogel will be grading it (even WebAssign essay questions) C.Always when the computer will be grading it D.Never

3. Speed in Medium Glass has a higher index of refraction than water. 400-nm light passes from vacuum into glass and into water. The light has ___ speed, ___ wavelength, and ___ frequency in glass than water, A.slower, shorter, higher B.slower, longer, lower C.slower, shorter, the same D.faster, shorter, higher E.faster, longer, lower F.faster, shorter, the same

4. Polarization Rank the following according to the intensity of light that gets through, least to greatest i)unpolarized light through a polarizer set at 10 o to vertical ii)unpolarized light through a polarizer set at 25 o to vertical iii)unpolarized light through a polarizer set at 35 o to vertical a)i, ii, ii b)ii, i, iii c)iii, i, ii d)all are equal

5. Polarization Rank the following according to the intensity of light that gets through, least to greatest i)unpolarized light through a polarizer set at 10 o to vertical ii)light polarized at 10 o to vertical through a vertical polarizer iii)light polarized at 10 o to vertical through a horizontal polarizer a)i, ii, ii b)ii, i, iii c)iii, i, ii d)all are equal