The newest 20 of 27 written questions. Open one to see it on the real paper.
Define refractive index.
See it on the paper →Calculate the refractive index of the transparent material. refractive index =
See it on the paper →State the name of the line XY.
See it on the paper →State the name of the effect shown in Fig. 11.2.
See it on the paper →On Fig. 11.2, label the angle of incidence with the letter i.
See it on the paper →State the name of the dotted line AB.
See it on the paper →On Fig. 12.2, label the angle of incidence with the letter i.
See it on the paper →The angle of incidence is 40°. State the angle of reflection. angle of reflection = °
See it on the paper →State the name of the dotted line AB.
See it on the paper →The computer projector uses a lens to form an image. In another device, the object is placed between the principal focus and the lens. On Fig. 12.2, draw rays to find the position of the image formed. Use an arrow to represent the image. F object F lens Fig. 12.2
See it on the paper →State a use of the arrangement shown in Fig. 12.2.
See it on the paper →at point X.
See it on the paper →Describe how a simple a.c. generator produces an output potential difference (p.d.).
See it on the paper →Draw a second ray from the top of the smoke particle to locate the position of the top of the image. Label the top of the image with the letter I.
See it on the paper →On Fig. 12.3, label the principal focus of the lens with the letter F.
See it on the paper →On Fig. 12.3, use a double headed arrow (↔) or (↕) to show the focal length of the lens.
See it on the paper →Circle the two correct words or phrases that describe the image. diminished enlarged inverted same size upright
See it on the paper →A scientist captures the butterfly in a plastic container to study it more closely. The scientist places a converging lens across the top of the plastic container. Fig. 9.2 shows the butterfly in the container. converging lens Fig. 9.2 Complete Fig. 9.3 to show how a thin converging lens forms a real image. Label the i...
See it on the paper →On Fig. 12.3, label the angle of incidence with the letter i.
See it on the paper →Identify the line labelled X.
See it on the paper →Some candidates knew the line was the normal. Others described it as the reflection, mirror line or line of refraction, none of which gained credit.
— Examiner report, May/June 2025, 0654/31 Q11(c)(i) (Cambridge)
Most candidates either wrote reflection or refraction. Some tried words in between which were not awarded credit.
— Examiner report, May/June 2025, 0654/31 Q11(c)(ii) (Cambridge)
The position of the angle of incidence was not well known with the letter i being scattered across the diagram. Again, candidates need to be clear when labelling.
— Examiner report, May/June 2025, 0654/31 Q11(c)(iii) (Cambridge)
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