A light ray whose frequency is 6.00 1014 Hz in vacuum is incident on water (n = 1.33). The wavelength of the light after it enters the water is (in nm)
a. 798
b. 500
c. 665
d. 376
e. 266
Question 2
Two flat rectangular mirrors are set edge to edge and placed perpendicular to a flat nonreflecting surface. The edges of the two mirrors meet at a 30 angle. A light ray that enters parallel to mirror 2 reflects from mirror 1 and then from mirror 2 . The angle of reflection of that ray from mirror 2 is
a. 0.
b. 30.
c. 60.
d. 90.
e. 120.