Three materials with n1 < n2 < n3 are arranged in layers of ...

[james0929]

Three materials with n1 < n2 < n3 are arranged in layers of uniform thickness. A light ray in air enters the first layer at an angle of incidence of 40 and the ray eventually exits the third layer at the refracted angle q in air. What is the value of q?
 a. Some angle more than 40.
  c. 40.
  b. Insufficient information to answer.
  d. Some angle less than 40.

Question 2

A long steel beam has a length of fifty meters on a cold day when the temperature is 0C. What is the length of the beam on a hot day when T = 40C? (asteel= 1.1  10-5/C)
 a. 50.044 m
  c. 50.088 m
  b. 50.022 m
  d. 50.0044 m

[joanwhite]

Answer to Question 1

C

Answer to Question 2

B

[james0929]

TY

[joanwhite]

You're welcome