Author Question: A girl is standing in front of a concave mirror. Consider two rays of light, one from her nose and ... (Read 34 times)

newbem · **on:** Jul 28, 2018

A girl is standing in front of a concave mirror. Consider two rays of light, one from her nose and one from her mouth that are parallel as they are traveling toward the mirror. These rays will come together:
a. at the focal point.
b. at the center of curvature.
c. at the image point.
d. behind the mirror if she is too close to the mirror.

Question 2

In a greenhouse, electromagnetic energy in the form of visible light enters the glass panes and is absorbed and then reradiated. What happens to this reradiated electromagnetic radiation from within the greenhouse?
a. 100 returns to the atmosphere.
b. It's partially blocked by glass.
c. It's transformed into ultraviolet upon striking the glass.
d. It's reflected as visible light upon striking the glass.