The trapping of light in light pipes, or fiber optics, is due to ...

[dakota nelson]

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

[14vl19]

Answer to Question 1

a

Answer to Question 2

a

[dakota nelson]

YES! Correct, THANKS for helping me on my review

[blakcmamba]

Thanks for the timely response, appreciate it