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2.3 Transfer of thermal energy

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Question 195

Solar water heating panels are usually painted matt black. What is the reason for this?

A

Matt black surfaces are poor absorbers of radiant energy.

B

Matt black surfaces are good absorbers of radiant energy.

C

Matt black surfaces are good reflectors of radiant energy.

D

Matt black surfaces are good transmitters of radiant energy.

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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