Multiple choice

For clear vision, the object should be at a minimum distance of ______.

  1. 15 cm

  2. 20 cm

  3. 25 cm

  4. 50 cm
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

25 cm is the standard near point (closest distance for comfortable focusing) for a normal human eye. At distances closer than this, the eye's ciliary muscles must contract maximally to accommodate, causing strain. This is an average value - near point can vary with age and individual differences.

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