Multiple Choice
If a hydrogen emission line appears at 656.2 nm in the laboratory, what can we say about a cloud of hydrogen gas with this same emission line at 680.2 nm?
A) It is neither receding nor approaching us.
B) The location of the emission line has nothing to do with speed.
C) It is approaching us.
D) It is receding away from us.
Correct Answer:
Verified
Correct Answer:
Verified
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