Multiple Choice
The Stefan-Boltzmann law indicates that the energy emitted per second per area of an emitting surface varies with the fourth power of the Kelvin temperature. Suppose the center of a sunspot on the Sun's photosphere is 4000 K and the normal photosphere is about 6000 K. About how much energy is emitted each second from each unit area in the center of this sunspot compared with that from the normal photosphere?
A) 10-8
B) 0.20
C) 0.67
D) 0.98
Correct Answer:
Verified
Correct Answer:
Verified
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