If someone says they are using an 8-inch reflecting telescope, what do they mean?
A) The length of the telescope tube is 8 inches.
B) The radius of the mirror is 8 inches.
C) The diameter of the mirror is 8 inches.
D) The focal length of the mirror is 8 inches.
Correct Answer:
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Q17: Which of the following is not a
Q18: When used for photography, which of the
Q19: The largest refracting telescope in the world
Q20: To correct for chromatic aberration in a
Q21: A thick lens is able to bend
Q23: At the mirror of a reflecting telescope,
Q24: In the reflection of a light beam
Q25: In the reflection of a beam of
Q26: A light ray strikes a smooth surface
Q27: A Newtonian telescope uses:
A)two curved mirrors.
B)several mirrors,
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