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2.3 Transfer of thermal energy

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Question 207

A student fills four identical metal cans with the same volume of water at 80∘C80^\circ\text{C}80∘C. The cans are identical in every way except for their outside surfaces:

  • Can 1: dull, black surface
  • Can 2: dull, silver surface
  • Can 3: shiny, black surface
  • Can 4: shiny, silver surface

Which can will cool down the slowest?

A

Can 1

B

Can 2

C

Can 3

D

Can 4

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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