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2.3 Transfer of thermal energy

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Question 164

An object emits thermal radiation.

Which option describes two changes that both increase the rate of emission of thermal radiation?

A

Surface area decreased, surface temperature decreased

B

Surface area decreased, surface temperature increased

C

Surface area increased, surface temperature decreased

D

Surface area increased, surface temperature increased

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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