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:
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