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5.3 Black body radiation

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Question 14
F

A student heats identical plates with different surface finishes for the same time. Their starting temperatures differ. The table shows the results.

PlateStarting temperature in ∘C^\circ\mathrm{C}∘CFinal temperature in ∘C^\circ\mathrm{C}∘C
P1827
Q2430

The student concludes that Q is the better absorber because its final temperature is higher. Which evaluation is correct?

[1]
A

Q has the larger rise, but the starting temperatures should be equal.

B

P has the larger rise, and unequal starting temperatures ensure a fair test.

C

P has the larger rise, but the starting temperatures should be equal.

D

Q has the larger rise, and unequal starting temperatures ensure a fair test.

Markscheme

5.3 Black body radiation Questions

  1. GCSE
  2. /Physics
  3. /5.3 Black body radiation

96 exam-style questions on Edexcel GCSE Physics 5.3 Black body radiation, covering 5.3.1 Emission of radiation and temperature, 5.3.2 Radiation balance and constant temperature, and 5.3.3 The temperature of the Earth. Each one has a worked solution and a mark scheme showing where the marks go.

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