Cuesta College, San Luis Obispo, CA
Which star is the smallest?
(A) B5 white dwarf.
(B) M0 red dwarf.
(C) A5 main sequence star.
(D) F0 supergiant.
(E) (There is a tie.)
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 F0 supergiant is the largest, followed by the A5 main-sequence star, M0 red dwarf, and the B5 white dwarf is the smallest, with a radius of just over 0.01× the radius of the sun.
Exam code: quiz05NpRm
(A) : 13 students
(B) : 8 students
(C) : 1 students
(D) : 0 students
(E) : 0 students
Success level: 63% (including partial credit for multiple-choice)
Discrimination index (Aubrecht & Aubrecht, 1983): –0.05