Which of the following types of electromagnetic radiation has the smallest frequency?

Which of the following types of electromagnetic radiation has the smallest frequency?
 
  a. X-rays
  b. visible light
  c. radio
  d. gamma rays
  e. infrared radiation

Question 2

We know that giant stars are larger in diameter than the Sun because
 
  a. they are more luminous but have about the same temperature.
  b. they are less luminous but have about the same temperature.
  c. they are hotter but have about the same luminosity.
  d. they are cooler but have about the same luminosity.
  e. they have a larger absolute magnitude than the Sun.

Question 3

Which of the following types of electromagnetic radiation has the highest frequency?
 
  a. X-rays
  b. visible light
  c. radio
  d. gamma rays
  e. infrared radiation

Question 4

In the H-R diagram, roughly 80 percent of all stars are
 
  a. in the giant region.
  b. in the supergiant region.
  c. among the B stars.
  d. among the G stars.
  e. on the main sequence.

Question 5

Photons of blue light
 
  a. have a greater energy than photons of red light.
  b. have a greater energy than photons of ultraviolet light.
  c. have a lower frequency than photons of red light.
  d. have a longer wavelength than photons of red light.
  e. travel at a greater speed than photons of red light.

Question 6

In an H-R diagram, stars with the smallest radius are found in the _________ of the diagram.
 
  a. center
  b. upper left corner
  c. upper right corner
  d. lower left corner
  e. lower right corner