Other questions in this quiz

2. What type of lens is use for magnifying glasses?

  • Convex
  • Concave

3. What type of lens is used for long sighted people?

  • Convex/converging
  • Concave/Diverging

4. What is the focal length?

  • The distance from the eye to the lens
  • the distance from the centre of the lens to the principal focus
  • The distance from each of the principal focuses

5. What type of lens is used for short sighted people?

  • Concave/diverging
  • Convex/converging


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