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2.3 Transfer of thermal energy

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Question 18

Three solid aluminium spheres, J, K, and L, are heated to the same temperature.

SphereDiameterColour of surface
JDDDshiny silver
K3D3D3Ddull black
L3D3D3Dshiny silver

Which of the following correctly shows the spheres ordered by their rate of emission of thermal radiation?

A

Highest: K; Second highest: J; Lowest: L

B

Highest: K; Second highest: L; Lowest: J

C

Highest: L; Second highest: K; Lowest: J

D

Highest: L; Second highest: J; Lowest: K

Markscheme

2.3 Transfer of thermal energy Questions

  1. IGCSE
  2. /Physics
  3. /2.3 Transfer of thermal energy

301 exam-style questions on CIE IGCSE Physics 2.3 Transfer of thermal energy, covering 2.3.1a Thermal conductors and thermal insulators, 2.3.1b Explaining thermal conduction, 2.3.2 Convection, 2.3.3a Thermal radiation, 2.3.3b Surface colour and texture, 2.3.3c Rate of emission and absorption of radiation, and 2.3.4 Consequences of thermal energy transfer. Each one has a worked solution and a mark scheme showing where the marks go.

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