Available practice: 73 of 75 marks. Parts 7(a) await marking support. Scores cover available parts only. Theory Paper 2: Section A is compulsory and Section B offers a choice of two questions. Four published mark-scheme discrepancies across the two variants are held from automatic marking.
OR (a)The circuit diagram shown in Fig. 9.2 uses an LDR as the sensor in an automatic night light. When it gets dark, the lamp turns on. State the name of component A.
Answer guidance
State A short answer. No explanation is needed, and adding one cannot earn extra marks.
[1 mark]
OR (b)The circuit diagram shown in Fig. 9.2 uses an LDR as the sensor in an automatic night light. When it gets dark, the lamp turns on. Explain why the lamp turns on when it gets dark.
Answer guidance
Explain Give reasons, not just what happens. Each distinct reason is usually worth a mark.
[3 marks]
5054/21/M/J/16Cambridge O Level Physics 5054 · May/June 2016 · Paper 2 variant 1 · Question 9O