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2.3 Transfer of thermal energy

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Question 83

A chef uses an overhead heating lamp to keep food hot before it is served. Which type of radiation is mainly responsible for transferring thermal energy to the food, and what type of wave is this radiation?

A

Infrared, longitudinal

B

Infrared, transverse

C

Ultraviolet, longitudinal

D

Ultraviolet, transverse

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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