Long-sight defect could be corrected by using __________ lens?
- A. concave
- B. Convex
- C. diverging
- D. none of these
Explanation
Long-sightedness, or hypermetropia, occurs when near images would focus behind the retina; a convex lens brings the focus forward onto the retina. A concave or diverging lens is used for short-sightedness.
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