1. When light passes from vacuum (index of refraction n = 1) into water (n = 1.333), Q33.1 A. the wavelength increases and the frequency is unchanged. B. the wavelength decreases and the frequency is unchanged. C. the wavelength is unchanged and the frequency increases. D. the wavelength is unchanged and the frequency decreases. E. both the wavelength and the frequency change.

2. When light passes from vacuum (index of refraction n = 1) into water (n = 1.333), A33.1 A. the wavelength increases and the frequency is unchanged. B. the wavelength decreases and the frequency is unchanged. C. the wavelength is unchanged and the frequency increases. D. the wavelength is unchanged and the frequency decreases. E. both the wavelength and the frequency change.

3. Light passes from vacuum (index of refraction n = 1) into water (n = 1.333). If the incident angle  a is in the range 0° <  a < 90°, Q33.2 A. the refracted angle is greater than the incident angle. B. the refracted angle is equal to the incident angle. C. the refracted angle is less than the incident angle. D. the answer depends on the specific value of  a.

4. Light passes from vacuum (index of refraction n = 1) into water (n = 1.333). If the incident angle  a is in the range 0° <  a < 90°, A33.2 A. the refracted angle is greater than the incident angle. B. the refracted angle is equal to the incident angle. C. the refracted angle is less than the incident angle. D. the answer depends on the specific value of  a.

5. Light passes from a medium of index of refraction n a into a second medium of index of refraction n b. The angles of incidence and refraction are  a and  b respectively. If n a < n b, Q33.3  a >  b and the light speeds up as it enters the second medium. B.  a >  b and the light slows down as it enters the second medium. C.  a <  b and the light speeds up as it enters the second medium. D.  a <  b and the light slows down as it enters the second medium.

6. Light passes from a medium of index of refraction n a into a second medium of index of refraction n b. The angles of incidence and refraction are  a and  b respectively. If n a < n b, A33.3  a >  b and the light speeds up as it enters the second medium. B.  a >  b and the light slows down as it enters the second medium. C.  a <  b and the light speeds up as it enters the second medium. D.  a <  b and the light slows down as it enters the second medium.

7. Q33.4 Light passes from a medium of index of refraction n a into a second medium of index of refraction n b. The critical angle for total internal reflection is  crit. In order for total internal reflection to occur, what must be true about n a, n b, and the incident angle  a ? A. n a > n b and  a >  crit B. n a > n b and  a <  crit C. n a  crit D. n a < n b and  a <  crit

8. Light passes from a medium of index of refraction n a into a second medium of index of refraction n b. The critical angle for total internal reflection is  crit. In order for total internal reflection to occur, what must be true about n a, n b, and the incident angle  a ? A33.4 A. n a > n b and  a >  crit B. n a > n b and  a <  crit C. n a  crit D. n a < n b and  a <  crit

9. Three polarizing filters are stacked with the polarizing axes of the second and third filters oriented at 45° and 90°, respectively, relative to the polarizing axis of the first filter. Unpolarized light of intensity I 0 is incident on the first filter. The intensity of light emerging from the third filter is Q33.5

10. A33.5 Three polarizing filters are stacked with the polarizing axes of the second and third filters oriented at 45° and 90°, respectively, relative to the polarizing axis of the first filter. Unpolarized light of intensity I 0 is incident on the first filter. The intensity of light emerging from the third filter is

11. Natural light is incident on the surface of a liquid. The reflected light will be completely polarized if the incident angle  a is Q33.6 A. greater than the polarizing angle. B. greater than or equal to the polarizing angle. C. equal to the polarizing angle. D. less than or equal to the polarizing angle. E. less than the polarizing angle.

12. Natural light is incident on the surface of a liquid. The reflected light will be completely polarized if the incident angle  a is A33.6 A. greater than the polarizing angle. B. greater than or equal to the polarizing angle. C. equal to the polarizing angle. D. less than or equal to the polarizing angle. E. less than the polarizing angle.