Question

According to the size, identify the correct decreasing order :

a) Original star

b) Red giant

c) White Dwarf

• A. a, b, c
• B. b, c, a
• C. c, a, b
• D. b, a, c

Answer 1

Answer: (D)

b, a, c

The diameter of a medium star can increase by a factor of 200, while its cooling is translated into a reddening of its radiation, and the star becomes a red giant.
Stars of few solar masses, collapse under gravity after they run out of fuel and become white dwarfs.
Hence, Red giant > Original star > White dwarf