Refraction and Lenses – Worksheet


Worksheet to accompany the lesson Refraction and Lenses.

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refraction and lenses worksheet


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Worksheet Contents

  • This worksheet covers:
  • Refraction
  • The refractive index
  • The law of refraction (Snell’s law)
  • Convex and concave lenses
  • Refraction of light by convex and concave lenses
  • Images formed by convex and concave lenses
  • Lens curvature and focal length
  • Lenses in the eye
  • Properties of symmetrical lenses
  • Drawing ray diagrams
  • Real images and virtual images
  • Includes:
  • Unit outline.
  • Cloze activity (fill in the blanks).
  • Short-answer questions.
  • Extension questions.
  • Topics for further research.
  • Teacher version containing complete answers.
  • Aligned to the Australian Year 9 Science curriculum.
  • 12 pages.

Learning Outcomes

  • By the end of this worksheet students will be able to:
  • ☑   Explain refraction and describe the refractive index, using water and prisms as examples.
  • ☑   Describe the law of refraction.
  • ☑   Describe convex and concave lenses.
  • ☑   Describe how light refracts through convex and concave lenses.
  • ☑   Define focal point, focal length, principal axis, mid-plane and optical centre.
  • ☑   Describe how lenses in the eye focus light.
  • ☑   Differentiate between near-sightedness and far-sightedness and describe how they can be corrected with lenses.
  • ☑   Draw ray diagrams to determine the images produced by convex and concave lenses.
  • ☑   Differentiate between real and virtual images produced by lenses.


This resource is also included in the Year 9 Physics PDF Workbook.


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