Multiple Choice
What is the most important difference between an active galactic nucleus and a dormant black hole at the centre of a galaxy?
A) Active galactic nuclei are only found in elliptical galaxies, but dormant black holes are found in all galaxy types.
B) The black holes in active galactic nuclei have much larger masses than those of dormant black holes.
C) The black holes in active galactic nuclei have much smaller masses than those of dormant black holes.
D) The black holes in active galactic nuclei have much more matter flowing into them.
Correct Answer:

Verified
Correct Answer:
Verified
Q13: What observational evidence do we have that
Q14: When does gravitational lensing occur?<br>A)when light passes
Q15: Centaurus A is a radio galaxy that
Q16: Why were quasars so mysterious when first
Q17: Our galaxy is not a radio galaxy,but
Q19: Which of the following types of objects
Q20: Some quasars have fuzz around them that
Q21: Which of the following describes the way
Q22: Which of the following indicates that quasars
Q23: Which of the following are spiral galaxies