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1 markPhysics of the Ear and Eye

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

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

Identify the grandmother's eye defect.

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Other parts of this question

  1. 2(a)(ii)Name the type of lens that could be used to correct the eye defect identified in (a)(i).[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