As compared with a large telescope mirror, a large telescope lens
A) is easier to support against sag.
B) does not disperse light.
C) can provide higher magnification.
D) has no advantages.
Correct Answer:
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Q1: Nuclear reactions in the sun's interior convert
A)
Q6: The spectrum of a star can provide
Q8: The interior of the sun consists of
A)
Q17: Solar storms may affect
A)the earth's magnetic field.
B)electric
Q20: The number of sunspots
A)remains approximately constant.
B)increases and
Q24: Stars whose intrinsic brightness and period of
Q32: The earth's magnetic field influences
A) comets.
B) meteoroids.
C)
Q38: Auroras consist of
A) colored clouds.
B) comet tails.
C)
Q39: There is a surprisingly small variation among
Q44: The smallest of the following celestial objects
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