Two objects, A A\,A and BBB, are initially at room temperature. Each object is heated so that its temperature rises by 15 ∘C15\,^\circ\text{C}15∘C.
The objects are then allowed to cool back to room temperature.
Object A A\,A has a smaller thermal capacity than object BBB.
Which row in the table shows the object that requires less thermal energy to heat up by 15 ∘C15\,^\circ\text{C}15∘C and the object that loses less thermal energy as it cools back to room temperature?
| Less energy for heating | Less energy for cooling | |
|---|---|---|
| A | AAA | AAA |
| B | AAA | BBB |
| C | BBB | AAA |
| D | BBB | BBB |
Less energy for heating: AAA; Less energy for cooling: AAA
Less energy for heating: AAA; Less energy for cooling: BBB
Less energy for heating: BBB; Less energy for cooling: AAA
Less energy for heating: BBB; Less energy for cooling: BBB
528 exam-style questions on CIE IGCSE Physics 2.2 Thermal properties and temperature, covering 2.2.1 Thermal expansion of solids, liquids and gases, 2.2.2a Internal energy and temperature, 2.2.2b Specific heat capacity, 2.2.3a Melting, boiling, condensation and solidification, 2.2.3b Evaporation, and 2.2.3c Cooling by evaporation. Each one has a worked solution and a mark scheme showing where the marks go.