Q. Consider the following statements:
1.Variable stars are stars that brightens without experiencing fluctuations.
2.Cepheids stars are a variable star which are larger than the Sun.
Select the correct statements using the codes given below:

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: B

Explanation –

Statement 1 is incorrect. Variable stars are stars that experience fluctuations in their brightness.

Statement 2 is correct. Cepheids stars are a special type of variable star in that they are hot and massive – five to twenty times as much mass as our Sun.

Source: ForumIAS