Cuesta College, San Luis Obispo, CA
An A5 white dwarf has a ___________ than a G5 supergiant.
(A) brighter luminosity.
(B) larger size.
(C) hotter temperature.
(D) (Two of the above choices.)
(E) (All of the above choices.)
(F) (None of the above choices.)
Correct answer (highlight to unhide): (C)
An H-R diagram is provided with this quiz.
These stars are plotted on an H-R diagram below. The A5 white dwarf has a hotter temperature, but a dimmer luminosity and smaller size than the G5 supergiant.
Exam code: quiz05Sh0w
(A) : 2 students
(B) : 1 student
(C) : 20 students
(D) : 3 students
(E) : 2 students
(F) : 1 students
Success level: 70% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.75
(Cf. a re-worded version of this same question: "A G5 supergiant has a ___________ than an A5 white dwarf.")