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2.3 Transfer of thermal energy

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Question 8

Four identical metal cans containing equal volumes of hot water at 85∘C85^\circ\text{C}85∘C are left to cool in a room at 20∘C20^\circ\text{C}20∘C.

The four cans are identical except for their outer surface colour and texture:

  • Can A: shiny silver
  • Can B: shiny black
  • Can C: dull white
  • Can D: dull black

Which can will cool down the quickest?

A

Can A

B

Can B

C

Can C

D

Can D

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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