| Date | May 2017 | Marks available | 1 | Reference code | 17M.1.SL.TZ1.30 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 30 | Adapted from | N/A |
Question
The average surface temperature of Mars is approximately 200 K and the average surface temperature of Earth is approximately 300 K. Mars has a radius half that of Earth. Assume that both Mars and Earth act as black bodies.
What is \(\frac{{{\text{power radiated by Mars}}}}{{{\text{power radiated by Earth}}}}\)?
A. 20
B. 5
C. 0.2
D. 0.05
Markscheme
D
Examiners report
[N/A]
Syllabus sections
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