a student is unable to see the word wtitten on the black board placed at a distance of approximately 3m from him.name the defect of vision the boy is suffering from. state the possible cause of this defext and explain the method of correcting it.
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Answered by
6
Student is suffering from Myopia.
Causes:
1.Decrease in focal length
2.Excessive curvature of lens
It can be corrected using a diverging lens (concave) so the image forms on retina.
Causes:
1.Decrease in focal length
2.Excessive curvature of lens
It can be corrected using a diverging lens (concave) so the image forms on retina.
akshu47:
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Myopia ; elongation of eye ball,excessive curvature of eye lens;it's is corrected by concave lens.
Answered by
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Hey friend^_^
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Your answer is::
He is suffering from myopia.
Myopia is a short sightedness . It is a defect of the eye in which the vision of near objects is clear while vision of distant objects is unclear.
In this type of defect,the image from distant objects will be formed just in the front of the retina whereas the image of near objects will be formed exactly on the ratina.
This defect in the vision can be corrected by using concave lens of appropirate power..
///////////^^////////////////////////////////////////////////////
HOPE IT HELPED YOU■■■■■■□□
______€€_______
Your answer is::
He is suffering from myopia.
Myopia is a short sightedness . It is a defect of the eye in which the vision of near objects is clear while vision of distant objects is unclear.
In this type of defect,the image from distant objects will be formed just in the front of the retina whereas the image of near objects will be formed exactly on the ratina.
This defect in the vision can be corrected by using concave lens of appropirate power..
///////////^^////////////////////////////////////////////////////
HOPE IT HELPED YOU■■■■■■□□
Myopia ; elongation of eye ball,excessive curvature of eye lens;it's is corrected by concave lens.
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