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1 markPhysics of the Ear and Eye

CAPE Physics Unit 1 · 2019 · Paper 2 · Question 2(a)(ii)

A grandmother cannot read her newspaper clearly unless she holds it 15 cm from her eye. The normal near point is 25 cm.

Name the type of lens that could be used to correct the eye defect identified in (a)(i).

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Other parts of this question

  1. 2(a)(i)Identify the grandmother's eye defect.[1 mark]
  2. 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]
  3. 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]
  4. 2(c)Calculate the power of the lens needed to correct her eye defect.[5 marks]
  5. 2(d)By scale drawing, determine the image height and image distance.[8 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]

More practice: the rest of this paper · more Physics of the Ear and Eye questions · all CAPE Physics Unit 1 past papers