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CAIE IGCSE Physics 2.1.3.2 Convert temperatures between kelvin

Practise converting temperatures between kelvin and degrees Celsius for gases, boiling points and absolute-temperature data.

Syllabus
2026–2028
Course
Physics 0625

Exam points

  • use T = theta + 273 to convert between K and degrees Celsius with correct signs
  • calculate Celsius values below zero from low kelvin temperatures

2.1.3.2—Convert temperatures between kelvin question 1

[Maximum number: 2]

The lowest possible temperature is zero kelvin ( 0 K ).

Nitrogen boils at 77 K .

Calculate the boiling point of nitrogen on the Celsius scale.
boiling point = ∘C[2]{ }^{\circ} \mathrm{C}[2]

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