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Author Question: Gravitational lensing can be used to detect the presence of dark matter. a. True b. False ... (Read 28 times)

pragya sharda

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on: Jul 27, 2018
Gravitational lensing can be used to detect the presence of dark matter.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

What unit is used to measure wavelengths?
 
  a. arc second
  b. photons
 c. degrees
 d. nanometer
  e. pixels


kingfahad97

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

True

Answer to Question 2

d


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