wo spherical blackbodies (A and B) are close to each other but far from the observer. If A is twice as large in radius as B but B is twice as high in temperature then how much brighter will A appear than B? (i.e. what is BrightnessA / BrightnessB ?) Question 1 options: 1/4 1/2 1 (i.e. they are the same brightness) 2 4