Practice Quiz

ABO NOCE Basic Opticianry

Category - Ophthalmic Optics

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A plus lens is produced by:
  1. Putting two prisms apex to apex
  2. Putting two prisms base to base
  3. Putting two prisms base to apex
  4. None of the above
Explanation
Answer: B - Putting two prisms base to base

A plus lens is produced by putting two prisms base to base. Conversely, a negative lens is produced by putting two prisms apex to apex.
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