Star A has luminosity LA = 100 LSun and it is 1000 pc away. Star B has the same luminosity as the Sun, LSun, and it is 100 pc away. What is true about the brightnesses of these two stars?
A) Star A is brighter than Star B.
B) Star B is brighter than Star A.
C) Star A and Star B have the same brightness.
D) It is not possible to answer the question without knowing LSun, the luminosity of the Sun.
Correct Answer:
Verified
Q63: Suppose that two identical stars (they have
Q64: If star A has an apparent magnitude
Q65: How many times brighter than a magnitude
Q66: Suppose the distance between an observer and
Q67: The faintest stars observable through the largest
Q69: A star's absolute magnitude and its apparent
Q70: Sirius, visually the brightest star in Earth's
Q71: How many second-magnitude stars would be needed
Q72: Light leaving a point source spreads
Q73: How many stars of sixth-magnitude would it
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents