Which stars have the longest period of variability? a.RR Lyrae b.Type I (classical) Cepheids c.Type II Cepheids d.main-sequence stars e.All have the same period.

Name: Which stars have the longest period of variability? a. RR Lyrae b. Type I (classical) Cepheids c. Type II Cepheids d. main-sequence stars e. All have the same…
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Variable stars: Variable stars are the stars that change their apparent magnitude. There are two…

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	a.	RR Lyrae
	b.	Type I (classical) Cepheids
	c.	Type II Cepheids
	d.	main-sequence stars
	e.	All have the same period.

Which stars have the longest period of variability? a. RR Lyrae b. Type I (classical) Cepheids c. Type II Cepheids d. main-sequence stars e. All have the same period.