Author Question: Two parallel rays (also parallel to the optic axis) reflect from a concave mirror. They intersect at ... (Read 82 times)

rayancarla1 · **on:** Jul 27, 2018

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