Physics · Oct / Nov 2024 · Paper 11 · Question 23
5054Melting, boiling and evaporation
Thermal energy is supplied at a constant rate to a fixed mass of a substance that is initially solid. The graph shows how the temperature of the fixed mass of the substance varies with time. [graph: temperature vs time, with sections labelled W, X, Y, Z] In which sections of the graph does the substance absorb latent heat?
- AW and X
- BW and Y
- CX and Z
- DY and Z
As printed in the paper
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Correct answer: C. X and Z
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