The distance between which points is one wavelength? a. c and a b. d and b c. c and e d. c and f

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.

Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class