The Star Vega Has an Apparent Visual Magnitude of 0

question 28

Multiple Choice

The star Vega has an apparent visual magnitude of 0.03 and the star HR 4374 has an apparent visual magnitude of 4.87.It has been determined that both stars are at the same distance from the Earth.What does this information tell us about the two stars?

• A)Together the two stars would have a magnitude of 4.9.
• B)Vega must produce less energy per second than HR 4374.
• C)Vega must produce more energy per second than HR 4374.
• D)Vega will appear fainter to us than HR 4374.

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