O-LevelPhysicsThermal Physics5054/11 · May/June 2010 · Q161 Mark

An ice-cube has a mass of 7.50 g. The ice-cube is at 0°C. Heat from the surroundings reaches the ice-cube at an average rate of 1.25J/s. How long does it take for all of the ice to melt? (specific latent heat of fusion of ice = 333J/g)

A35.5 s

B55.5 s

C2000 s

D3120 s

✓ Correct answer

C: 2000 s

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Topic: Thermal Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2010 Paper 1 Variant 1, question 16.

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