The luminosity of the Sun is about 4 x 1015watts (joules per second). (True or false?)

The luminosity of the Sun is about 4 x 1015watts (joules per second).
 
  Indicate whether the statement is true or false

Question 2

In a Hertzsprung-Russell (H-R) diagram, points near the top of the diagram represent very low luminosity stars and points near the bottom represent very luminous stars.
 
  Indicate whether the statement is true or false

Question 3

An intrinsically very bright star might appear faint if it is far away.
 
  Indicate whether the statement is true or false

Question 4

Stellar parallax is the shift seen across a baseline of 2 AU rather than 1 AU.
 
  Indicate whether the statement is true or false

Question 5

The true masses of a spectroscopic binary cannot be found by astronomers.
 
  Indicate whether the statement is true or false