A material which has the ability to rotate the direction of polarization of linearly polarized light is said to be
A) circularly polarized.
B) birefringent.
C) optically active.
D) dichroic.
E) diffraction limited.
C
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What conditions are necessary for a total solar eclipse?
A) new moon on ecliptic near perigee B) full moon on ecliptic near aphelion C) new moon on equator at perigee D) full moon on equator at perigee E) new moon on ecliptic near aphelion
If all the "dark matter" in our universe were to be instantaneously removed, which of the following would not happen?
A) The Milky Way would fly apart. B) Clusters of galaxies would fly apart. C) The universe would expand forever. D) The Solar System would fly apart. E) All of the above
Hydrocarbons containing carbon-carbon triple bonds are
a. alkenes. b. cycloalkanes. c. alkynes. d. alkanes. e. ketones.
The number of moons in orbit around Mars is
A) zero. B) one. C) two. D) three.