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Date November 2012 Marks available 1 Reference code 12N.1.SL.TZ0.26
Level Standard level Paper Paper 1 Time zone Time zone 0
Command term Question number 26 Adapted from N/A

Question

For a black-body at absolute temperature T the power emitted per unit area is P. What is the power emitted per unit area when the temperature is decreased to 12T?

A. P32

B. P16

C. P8

D. P4

Markscheme

B

Examiners report

[N/A]

Syllabus sections

Core » Topic 8: Energy production » 8.2 – Thermal energy transfer
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