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2.3 Transfer of thermal energy

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Question 101

Four identical metal cans are filled with the same volume of hot water at 85∘C85^\circ\text{C}85∘C and placed in a room at 18∘C18^\circ\text{C}18∘C. Each can has a different outer surface finish:

  • Can P: Matt black
  • Can Q: Shiny black
  • Can R: Matt white
  • Can S: Shiny silver

Which can will cool down at the slowest rate, keeping the water hot for the longest time?

A

Can P

B

Can Q

C

Can R

D

Can S

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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