Chromatic aberration in lenses is due to the
A) reflection of light by the lens.
B) refraction of light by the lens.
C) dispersion of light by the lens.
D) polarization of light by the lens.
E) None of the other choices is correct.
Question 2
Suppose one twin takes a ride in a spaceship traveling at a very high speed to a distant star and then back again, while the other twin remains on Earth. Compared to the twin who remained on Earth, the astronaut twin is
A) younger than the Earth-twin.
B) the same age as the Earth-twin.
C) older than the Earth-twin.
D) The ages cannot be determined from the information provided.