Homework Answers
1.
Wavelength = speed of wave /frequency = 3*10^8/ (105.9*10^6)
Wavelength = 2.833 m
======
2.
refractive index = speed of light in air / speed of light in medium
Refractive index = 3/1.85 = 1.622
=====
3. Distnace = speed * time = 3*10^8* 10^-9 = 0.3 m
=====
4.
Using snell's law
Sin (theta2) / sin ( theta 1) = 1/1. 7
Theta 2 = 22.217
=======
Do comment in case any doubt, will reply for sure.. Goodluck
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