The time of variation in the brightness of quasars can be as short as:
A)a few seconds.
B)about a month.
C)about a year.
D)less than a day.

Name: The time of variation in the brightness of quasars can be as short as: A)a few seconds. B)about a month. C)about a year. D)less than a day.
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Question

Quizplus · Accepted Answer

Quasars can exhibit brightness variations on very short timescales, sometimes less than a day, due to their compact size and the rapid changes in their accretion disks.

The Time of Variation in the Brightness of Quasars Can