Author Question: The trapping of light in light pipes, or fiber optics, is due to a. total internal reflection. b. ... (Read 108 times)

dakota nelson · **on:** Jul 28, 2018

The trapping of light in light pipes, or fiber optics, is due to
a. total internal reflection.
b. refraction.
c. absorption of the outside light.
d. diffraction.

Question 2

Boat 1 goes directly across a stream a distance L and back taking a time t1 . Boat 2 goes down stream a distance L and back taking a time t2 . If both boats had the same speed relative to the water, which of the following statements is true?
a. t2 > t1
b. t2 < t1
c. t2 = t1
d. t2 = 2t1
e. t2 = 0.5t1