(a) What is the near point of the human eye with normal vision ?
(b) Why is a normal eye not able to see clearly the objects placed closer than the near point?

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Solution

1-Near point of human eye=25cm
2-This is because the ciliary muscles of eyes are unable to contract beyond a certain limit. If the object is placed at a distance less than 25cm from the eye, then the object appears blurred because light rays coming from the object meet beyond the retina.

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Q. Question 8
Why is a normal eye not able to see clearly the objects placed closer than 25 cm?

Name the eye defect in which eye lens becomes cloudy or milky. Mention the method for its correction. A person uses a lens of power -1.0 D for correcting his distant vision and for correcting his near vision he uses a lens of power + 2.0 D. Calculate the focal length of the lenses required to correct these defects. Explain why a normal eye is not able to see clearly the objects placed closer than the near points.

Q. A normal eye is not able to see objects closer than 25 cm because :

Q. What is the far and near point of human eye with normal vision.

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(a) What is the near point of the human eye with normal vision ?(b) Why is a normal eye not able to see clearly the objects placed closer than the near point?

1-Near point of human eye=25cm2-This is because the ciliary muscles of eyes are unable to contract beyond a certain limit. If the object is placed at a distance less than 25cm from the eye, then the object appears blurred because light rays coming from the object meet beyond the retina.

(a) What is the near point of the human eye with normal vision ?
(b) Why is a normal eye not able to see clearly the objects placed closer than the near point?

1-Near point of human eye=25cm
2-This is because the ciliary muscles of eyes are unable to contract beyond a certain limit. If the object is placed at a distance less than 25cm from the eye, then the object appears blurred because light rays coming from the object meet beyond the retina.