Two parallel rays (also parallel to the optic axis) reflect from ...

[rayancarla1]

Two parallel rays (also parallel to the optic axis) reflect from a concave mirror. They intersect at
 
  A) the center of curvature.
  B) the focal point.
  C) a point behind the mirror.
  D) infinity.

Question 2

At which of the following temperatures would we expect gas molecules to have half the energy that they have at 100.C?
 
  A) 93. K
  B) 50.C
  C) -86.C
  D) -56.C
  E) 323. K

[sultansheikh]

Answer to Question 1

B

Answer to Question 2

C

[rayancarla1]

Excellent

[AISCAMPING]

Thanks for the timely response, appreciate it