20151101

Astronomy quiz question: B5 supergiant vs. M5 supergiant

Astronomy 210 Quiz 5, fall semester 2015
Cuesta College, San Luis Obispo, CA

A B5 supergiant can have the same __________ as an M5 supergiant.
(A) luminosity.
(B) size.
(C) temperature.
(D) (Two of the above choices.)
(E) (All of the above choices.)
(F) (None of the above choices.)

Correct answer (highlight to unhide): (A)

An H-R diagram is provided with this quiz.


These stars are plotted on an H-R diagram below. The B5 supergiant has a hotter temperature and a smaller size than the M5 supergiant, but these two stars could have the same luminosity.


Section 70158
Exam code: quiz05s3T1
(A) : 24 students
(B) : 1 student
(C) : 0 students
(D) : 13 students
(E) : 2 students
(F) : 0 students

Success level: 64% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): 0.80

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