Light travels from inside a building to outside through a pane of ...

[burchfield96]

Light travels from inside a building to outside through a pane of glass. Which of the following is true regarding the phase change upon reflection in the case?
 a. A 180o phase change occurs at the inside surface but not at the outside surface.
  b. A 180o phase change occurs at the outside surface but not at the inside surface.
  c. A 180o phase change occurs at both the inside surface and the outside surface.
  d. No phase change occurs at either the inside surface or the outside surface of the glass.

Question 2

Suppose the pressure of 20 g of an ideal monatomic gas is tripled while its volume is halved. What happens to the internal energy of the gas?
 a. It stays the same, as the described changes do not involve internal energy.
  b. It increases.
  c. It decreases 33.
  d. This depends on the molecular weight of the gas involved, thus this is indeterminate.

[mohan]

Answer to Question 1

A

Answer to Question 2

B

[burchfield96]

Gracias!

[kusterl]

TYSM