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Date May 2017 Marks available 1 Reference code 17M.1.SL.TZ2.29
Level Standard level Paper Paper 1 Time zone Time zone 2
Command term Question number 29 Adapted from N/A

Question

A room is at a constant temperature of 300 K. A hotplate in the room is at a temperature of 400 K and loses energy by radiation at a rate of P. What is the rate of loss of energy from the hotplate when its temperature is 500 K?

A.  \(\frac{{{4^4}}}{{{5^4}}}\)P

B.  \(\frac{{{5^4} + {3^4}}}{{{4^4} + {3^4}}}\)P

C.  \(\frac{{{5^4}}}{{{4^4}}}\)P

D.  \(\frac{{{5^4} - {3^4}}}{{{4^4} - {3^4}}}\)P

Markscheme

D

Examiners report

[N/A]

Syllabus sections

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