The ____________________ is a measure of the finest detail that can be seen in an image. (Fill in the blank)

The ____________________ is a measure of the finest detail that can be seen in an image.
 
  Fill in the blank(s) with correct word

Question 2

If a star is located at 10 pc, which of the following statements is correct?
 
  a. The star's apparent and absolute visual magnitudes are equal. b. The star's apparent and absolute visual magnitudes are 0.
  c. The star's apparent visual magnitude is -1.1 whereas the absolute visual magnitude is 5 d. Two of the other choices are correct.

Question 3

Cygnus X-1 and LMC X-3 are black holes if the masses of the unseen companions perhaps may be
 
  a. less than 3 solar masses.
  b. more than 3 solar masses.
  c. between 0.4 and 1.4 solar masses.
  d. less than 0.4 solar masses.
  e. not larger than the masses of the stars that we can see.

Question 4

A wave on a lake is found to have a wavelength of 2 m and a frequency of 0.3 Hz. What is the speed of this wave?
 
  What will be an ideal response?

Question 5

If a star's apparent visual magnitude is equal to its absolute visual magnitude, how far is the star located from Earth?
 
  a. 0 pc b. 1 pc
  c. 10 pc d. 100 pc