Author Question: A fiber optic cable (n = 1.40) is submerged in water (n = 1.33). What is the critical angle for ... (Read 99 times)

MirandaLo · **on:** Jul 28, 2018

A fiber optic cable (n = 1.40) is submerged in water (n = 1.33). What is the critical angle for light to stay inside the cable?
a. 71.8
c. 62.5
b. 27.6
d. 41.8

Question 2

Of the following systems, which contains the most heat?
a. 100 kg of water at 80C
c. 600 kg of ice at 0C
b. 250 kg of water at 40C
d. Systems do not contain heat.