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2.3 Transfer of thermal energy

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Question 5

An object is designed to absorb infrared radiation as efficiently as possible. Which surface is not suitable?

A

a surface that is painted matt black

B

a surface that is highly polished and shiny

C

a surface with a rough texture

D

a surface with a large surface area

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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