alleryThe least distance of distinct vision for a healthy adult human eye is about:
A10 cm
B25 cm
C50 cm
D100 cm
Answer & Solution
Correct answer: B. 25 cm
1. The least distance of distinct vision is the closest distance at which a healthy eye can see clearly.
2. For an average healthy adult this is about 25 cm.
3. Children can usually focus closer than adults.
4. So the standard answer is 25 cm.
_Source: syllabus Science Ch 11 'Human Eye and the Colourful World'_
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