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Q.

The least distance of distinct vision for a young adult with normal vision is about?


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a

25 m

b

2.5 cm

c

25 cm

d

2.5 m 

answer is C.

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Detailed Solution

The human eye enables us to see this wonderful and colourful world. The image formed by the retina of the eyes is real and inverted, which is then sent to the brain with the help of optic nerves and then finally, we can see the objects around us. The least distance of distinct vision or the near point is the minimum distance which a human eye can see without strain on the eyes. A normal human eye cannot focus without strain in the eyes if objects are placed closer to the near point of the eyes; the near point of the human eye is 25 cm.  
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