Cambridge IGCSE ยท 0625 ยท Paper 4 ยท Theory (Extended)
Physics 0625/42 Feb/March 2019 past paper
Cambridge IGCSE Physics (0625) Paper 4 (Theory (Extended)), variant 2, Feb/March 2019: the question paper and its official mark scheme, 11 questions worth 80 marks, with the grade thresholds. Free to open, no account needed.
- Questions
- 11
- Marks
- 80
- Grade A from
- 50
File names: 0625_m19_qp_42 ยท 0625_m19_ms_42
Grade thresholds for 0625/42 Feb/March 2019
The minimum raw marks Cambridge set for each grade on this component (out of 80). Thresholds change every session and variant, so always compare your score with the paper you actually sat.
| A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|
| 50 | 41 | 33 | 28 | 22 | 16 | 10 |
Topics in this paper
Which syllabus chapters 0625/42 Feb/March 2019 tested, by marks. Each chapter links to every past-paper question on it.
| Chapter | Questions | Marks |
|---|---|---|
| Thermal properties & temperature | 2 | 16 |
| Pressure | 2 | 14 |
| Motion | 1 | 8 |
| Electric circuits | 1 | 8 |
| Energy, work & power | 1 | 7 |
| Mass & weight | 1 | 7 |
| Light | 1 | 7 |
| Nuclear model of the atom | 1 | 7 |
| Electromagnetic effects | 1 | 6 |
Questions in 0625/42 Feb/March 2019
- Question 1
(a) Define acceleration. (b) Fig. 1.1 shows the distance-time graph for the journey of a cyclist. โฆ
- Question 2
(a) State one advantage and one disadvantage of using a wind turbine as a source of electrical energy. advantage disadvantage (b) Fig. 2.1 shows a wind turbine. wind speed โฆ
- Question 3
(a) An object is moving in a straight line at constant speed. State three ways in which a force may change the motion of the object. โฆ
- Question 4
(a) Fig. 4.1 shows a mercury barometer. The tube containing the mercury is vertical. h S mercury Fig. 4.1 (i) The height h indicates a value of the atmospheric pressure. State what is contained in the space labelled S. (ii) โฆ
- Question 5
(a) State the values of the fixed points of a temperature scale. (b) (i) The graduations on a liquid-in-glass thermometer are equally spaced. For the equal spacing of the graduations to be correct, state: 1. an assumption that is made โฆ
- Question 6
An electrical heater is placed on the floor of a room in a house. The heater is switched on. (a) State the main process by which thermal energy is transferred to the air in all parts of the room. (b) โฆ
- Question 7
(a) In Fig. 7.1, the small circles represent molecules. The arrows refer to the change of state from the arrangement of molecules on the left to the arrangement of molecules on the right. X Y Fig. 7.1 Complete the following โฆ
- Question 8
Fig. 8.1 shows parallel wavefronts of a light wave in ice. The wavefronts are incident on a boundary with air. direction of wave air ice Fig. 8.1 The speed of the light wave in air is โฆ
- Question 9
Fig. 9.1 shows current-potential difference (p.d.) graphs for a resistor and for a thermistor. โฆ
- Question 10
(a) The electrical energy produced by a power station is transmitted over long distances at a very high voltage. Explain why a very high voltage is used. (b) Fig. 10.1 represents a transformer. โฆ
- Question 11
(a) (i) One isotope of iridium-194 is represented by 194 77 Ir This isotope decays by ฮฒ-emission to a stable isotope of platinum (Pt). Complete the nuclide equation for this decay. 194 77 Ir Pt + ฮฒ (ii) The half-life โฆ