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A Star That Has an Apparent Magnitude of 0 (See

Question 181

Multiple Choice

A star that has an apparent magnitude of 0 (see Figure 10-2,Comins,Discovering the Essential Universe,6th ed.) would:


A) be fainter than Spica (α Virginis) , which has an apparent magnitude of +1.0.
B) be brighter than Deneb (α Cygni) , which has an apparent magnitude of +1.2.
C) have infinite brightness since 1/0 = infinity.
D) not be emitting any light and therefore could not be seen from Earth.

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