User interface language: English | Español

Date November 2009 Marks available 1 Reference code 09N.1.SL.TZ0.29
Level Standard level Paper Paper 1 Time zone Time zone 0
Command term Question number 29 Adapted from N/A

Question

Venus and Earth may be regarded as behaving as black bodies. The mean temperature at the surface of Venus is about 600 K and at the surface of Earth is about 300 K. Which of the following is the best estimate for the ratio \(\frac{{{\text{power radiated per unit area on Earth}}}}{{{\text{power radiated per unit area on Venus}}}}\)?

A.     \(\frac{1}{2}\)

B.     \(\frac{1}{4}\)

C.     \(\frac{1}{8}\)

D.     \(\frac{1}{16}\)

Markscheme

D

Examiners report

[N/A]

Syllabus sections

Core » Topic 8: Energy production » 8.2 – Thermal energy transfer
Show 82 related questions

View options