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CAIE IGCSE Physics Infrared Thermal Radiation

Practise identifying infrared as the electromagnetic radiation responsible for thermal transfer from heaters and other objects across a distance.

Syllabus
2026–2028
Course
Physics 0625

Exam points

  • name infrared as the electromagnetic spectrum region that transfers thermal energy
  • identify a hot object as an infrared emitter and a distant object as the absorber

2.3.3.1—Thermal radiation is infrared question 1

[Maximum number: 1]

Fig. 3.1 shows a mains electric heater used to heat a small room.

Fig. 3.1

Fig. 3.1

State the region of the electromagnetic spectrum which radiates thermal energy from the heater.

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