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Author Question: An eclipsing binary will a. be more luminous than a visual binary. b. also be observed as a ... (Read 52 times)

schs14

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on: Jul 27, 2018
An eclipsing binary will
 
  a. be more luminous than a visual binary.
  b. also be observed as a spectroscopic binary.
  c. give off most of its light in the infrared.
  d. show a constant Doppler shift in its spectral lines.
  e. show two stars with variable proper motion.

Question 2

The pupil of the human eye is approximately 0.8 cm in diameter when adapted to the dark. The ratio of the light-gathering power of a 1.6-m telescope to that of the human eye is ____.
 
  a. 2
  b. 4
  c. 20
  d. 400
  e. 40,000


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leahm14

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Reply #1 on: Jul 27, 2018
Answer to Question 1

b

Answer to Question 2

e


schs14

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Reply 2 on: Jul 27, 2018
Excellent

chjcharjto14

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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