In the diagram above, the drag force a. is represented by x and to keep the jet from falling to the ground. b. is represented by w and makes the jet move forward at a faster speed. c. is represented by y and slows the forward motion of the jet. d. is represented by z and pulls the jet toward the ground.

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.