The figure below shows four stars on an HR diagram.Which star has the largest radius?
A) A
B) B
C) C
D) D

Question

The figure below shows four stars on an HR diagram.Which star has the largest radius? 
A) A 
B) B 
C) C 
D) D

Quizplus · Accepted Answer

A star's radius is directly related to its luminosity and temperature. From the HR diagram, we can see that Star A has the highest luminosity and is also towards the right, indicating a cooler temperature. This combination suggests that Star A has the largest radius of the four stars shown.

The Figure Below Shows Four Stars on an HR Diagram