An Astronomer Has a Sample of a Rarified Gas

question 4

Multiple Choice

An astronomer has a sample of a rarified gas. What kind of spectrum can it produce?

• A) It can only produce an emission line spectrum.
• B) It could produce an emission line spectrum, or it could produce an absorption line spectrum if placed in front of a bright continuous source.
• C) It could not produce a continuous spectrum even if condensed, liquefied, or solidified.
• D) It can only produce an absorption line spectrum.

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