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WAEC Physics 2020 Paper

Question : 30

Total: 51

Solution:

Concept:

A change of

1^\circ\mathrm{C}

is equal to a change of

1\ \mathrm{K}

on the kelvin scale.

Explanation:

The temperature is raised by

120^\circ\mathrm{C}

For a temperature difference, the numerical value is the same in both Celsius and kelvin:

\Delta T(\mathrm{K}) = \Delta T(^\circ\mathrm{C})

So the increase in absolute temperature is:

\Delta T = 120\ \mathrm{K}

Answer:

120\ \mathrm{K}

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