Multiple Choice
The hydrogen Balmer line Hβ has a wavelength of 486.1 nm in the laboratory. It is observed in a quasar at 2430.5 nm. What is the change in wavelength (in nm) of this quasar Is it a "redshift" or "blueshift"
A) 0; no change
B) 2430.5; redshift
C) 486.1; blue shift
D) 1944.4; blueshift
E) 1944.4; redshift
Correct Answer:
Verified
Correct Answer:
Verified
Q139: The unified model describes active galactic nuclei
Q140: Supermassive black holes are believed to be
Q141: In the unified model of active galactic
Q142: Double-lobed radio galaxies appear to be emitting
Q143: The above visual wavelength image suggests that
Q145: The fact that many radio lobes emit
Q146: Astronomers who discovered quasars found that they
Q147: Seyfert galaxies<br>A)are more common in close pairs
Q148: Why should we expect quasars to be
Q149: The Virgo cluster<br>A)is the galactic cluster that