The period-luminosity law of pulsating variable stars indicates that
A) the more slowly a star pulsates, the more luminous it is.
B) the faster a star pulsates, the more luminous it is.
C) the period of pulsation is independent of luminosity.
D) None of these choices is correct.

Question

Quizplus · Accepted Answer

The period-luminosity law states that there is a direct relationship between the pulsation period of a variable star and its luminosity, with longer periods corresponding to higher luminosities.

The Period-Luminosity Law of Pulsating Variable Stars Indicates That