Thermal radiation and energy balance

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Question 9
Easy

Two identical metal cubes are heated to 150 ∘C150\space^\circ\text{C}150 ∘C and then allowed to cool inside a vacuum chamber.

The experimental setup and the resulting cooling curves are shown in the diagram below.

Experimental setup of vacuum chamber and cooling curves

Explain why the curve for Cube X is different from the curve for Cube Y. Use ideas about thermal radiation to help your answer.

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Thermal radiation and energy balance Questions

  1. GCSE
  2. /Physics
  3. /Thermal radiation and energy balance