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Why is a normal eye not able to see clearly the objects placed closer than 25 cm?

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by (98.9k points) in Human Eye and Colourful World 375 views
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Why is a normal eye not able to see clearly the objects placed closer than 25 cm?
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A normal eye is unable to clearly see the objects placed closer than 25 cm because the ciliary muscles of eyes are unable to contract beyond a certain limit.
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