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ABO NOCE Basic Opticianry

Category - Ophthalmic Optics

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A plus lens is produced by:

Putting two prisms apex to apex
Putting two prisms base to base
Putting two prisms base to apex
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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