Name: __________________________ Date: _____________
1. The bending of light as it moves from one medium to another with differing indices of
refraction is due to a change in what property of the light?
A) amplitude
B) period
C) frequency
D) speed
E) color
2. Light propagates from soda lime glass (n = 1.518) into Pyrex glass (n = 1.473).
Determine the critical angle for this situation.
A) 13.99°
B) 45.86°
C) 52.48°
D) 65.22°
E) 76.01°
3. During one stage of a reversible process, the temperature of an ideal gas remains
constant as its volume is decreased. Which one of the following statements concerning
this situation is true?
A) The process is adiabatic.
B) The pressure of the gas decreases in this process.
C) Heat flows out of the gas and into the surroundings.
D) The gas does "positive" work on its surroundings.
E) The average kinetic energy of the gas molecules increases.
4. A heat engine operates in a Carnot cycle between reservoirs of temperatures 1000 K and
400 K. It is found to discharge 20 J of heat per cycle to the cold reservoir. What is the
work output per cycle?
A) 10 J
B) 20 J
C) 30 J
D) 40 J
E) 50 J
Page 1