InterviewSolution
Saved Bookmarks
| 1. |
A person is unable to see objects distinctly placed within 50 cm from hiseyes.a) Name the defe of vision the erinn e titwo possible causes.Draw a ray diagram to show the defect in the above case.(b)(c) Mention the type of lens used by him for the correction of thedefect and calculate its power. Assume that the near point for thenormal eye is 25 cm.Draw a labelled diagram for the correction of the defect in theabove case. |
|
Answer» This is known hypermetropia. Hypermetropia is also known as far sightedness. The causes are : 1. this defect arises because of the focal length of the eye lens to long. 2. the eyeball has become too slow. this can be corrected by using a convex lens of appropriate power. |
|