Saved Bookmarks
| 1. |
A student needs spectacles of power 05 D for the correction of hisvision.(i) Name the defect in vision the student is suffering from.(ii) Find the nature and focal length of the corrective lens.(iii) List two causes of this defect. |
|
Answer» (i) hypermetropia is defect in vision(ii) focal length=-2, nature -◆ concave lens(iii) elongation of eye ball and weakening of ciliary muscles i) hypermetropia is defect in vision(ii) focal length=-2, nature - concave lens(iii) elongation of eye ball and weakening of ciliary muscles |
|