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Home Q & A Board Science-Related Homework Help Physics Astronomy
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jai jai
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6 years ago
Which of the following features of a telescope determines its light-gathering power?
 
  A) The magnifying power of the objective
  B) The diameter of the primary mirror
  C) The focal length of the eyepiece
  D) The length of the telescope tube

Question 2

Among the following electromagnetic waves, photons of which electromagnetic radiations carry the lowest energy?
 
  A) Radio waves
  B) Visible light
  C) Ultraviolet
  D) Gamma rays

Question 3

The longest wavelength of visible light is _____.
 
  A) 400 nanometers
  B) 500 nanometers
  C) 700 nanometers
  D) 900 nanometers

Question 4

The__________of a lens or mirror is the distance from that lens or mirror to the point where it focuses parallel rays of light.
 
  A) image distance
  B) focal length
  C) radius of curvature
  D) object distance

Question 5

A__________is a device that separates light by wavelengths to produce a spectrum.
 
  A) lens
  B) mirror
  C) spectrograph
  D) interferometer
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MikestreffMikestreff
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6 years ago
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jai Author
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6 years ago
This calls for a celebration Person Raising Both Hands in Celebration
Harvinder
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lipop
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2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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