Star a Is a Main Sequence Star of Spectral Type $\mathrm { F 2}$

question 18

Multiple Choice

Star A is a main sequence star of spectral type $\mathrm { F 2}$ ad star B is a white dwarf of spectral typeB4. Which statement below is correct?

• A)Star A appears brighter than star B.
• B)Star B appears brighter than star A.
• C)Star A is hotter than star B.
• D)Star B is hotter than star A.
• E)None of the above can be said about these two stars.

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