alleryWho prescribes corrective lenses by stating their powers?
AOphidians
BObsidians
COctagons
DOpticians
Answer & Solution
Correct answer: D. Opticians
1. The prescription names a power, not a length.
2. The power is quoted in dioptres.
3. Opticians do.
_Source: syllabus Science, Ch 10 'Light - Reflection and Refraction'_
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