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8 marksPhysics of the Ear and Eye

CAPE Physics Unit 1 · 2019 · Paper 2 · Question 2(d)

A magnifying glass has a focal length of 6.4 cm. An object of height 1.5 cm is placed 2.5 cm away from the optical centre of the lens.

By scale drawing, determine the image height and image distance.

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Other parts of this question

  1. 2(a)(i)Identify the grandmother's eye defect.[1 mark]
  2. 2(a)(ii)Name the type of lens that could be used to correct the eye defect identified in (a)(i).[1 mark]
  3. 2(b)(i)Sketch a diagram of the eye clearly showing how the grandmother's eye forms the image without her corrective lens.[2 marks]
  4. 2(b)(ii)Sketch a diagram of the eye clearly showing how the grandmother's eye forms the image with her corrective lens.[2 marks]
  5. 2(c)Calculate the power of the lens needed to correct her eye defect.[5 marks]
  6. 2(e)With the aid of a diagram, show how an image is formed in a simple camera.[2 marks]
  7. 2(f)(i)Define the term 'refraction'.[2 marks]
  8. 2(f)(ii)Determine, by calculation, whether the ray will pass through PR.[5 marks]
  9. 2(f)(iii)On the diagram in Figure 3, draw the passage of the ray of light through the glass prism.[2 marks]

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