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Convex lens or concave lens?

Exercise and reference answers

Left
Convex
Items
  1. Item
    Thick in middle
    Answer
    Convex
  2. Item
    Converges rays
    Answer
    Convex
  3. Item
    Positive power
    Answer
    Convex
  4. Item
    Converging lens
    Answer
    Convex
  5. Item
    Thick at edges
    Answer
    Concave
  6. Item
    Diverges rays
    Answer
    Concave
  7. Item
    Negative power
    Answer
    Concave
  8. Item
    Diverging lens
    Answer
    Concave
Right
Concave
Instructions
Swipe left for Convex, right for Concave.

Explanation

_Source: syllabus Science, Ch 10 'Light - Reflection and Refraction'_
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