Question

12. Spectacles of positive power are recommended to correct the defective vision of a person
i) What is the nature of defect the person is suffering from?
ii) What is the problem with the shape of his eyeball?
iii) is the focal length of the eye lens too short or too long?
iv) Where is the image in the defective eye formed?​

Answer 1

Explanation:

(i) The person is suffering from hypermetropia

(ii) Elongation of eye ball

(iii) Focal length is too long

(iv) I

mage is formed beyond retina

Answer 2

i) the nature of defect is that the person suffering from it cannot clearly see the near objects

ii) the eye ball is shortened from back to front

iii) the focal length of the eye lens is too long

iv) the image is formed behind the retina in the defective eye

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