Question

If H J is the heat absorbed by a substance such that θ°C is the rise in its temperature then the thermal capacity of the substance is:

Options

• H θ J °C

• \[\frac{H}{\theta} \frac{\mathrm{~J}}{{ }^{\circ} \mathrm{C}}\]

• \[\frac{\theta}{H} \frac{{ }^{\circ} \mathrm{C}}{\mathrm{J}}\]

• none of these

Answer 1

\[\frac{H}{\theta} \frac{\mathrm{~J}}{{ }^{\circ} \mathrm{C}}\]

Explanation:

Thermal capacity is the heat required for a 1°C rise in temperature.

So $$C' = \frac{H}{\theta}$$, with unit J/°C.