InterviewSolution
Saved Bookmarks
| 1. |
atalyst, WriteTUI tiht Tdaction.01808. Define dioptre. What will be the sign used for finding the power of concave & convex lensIn which defect will a person wear lens with positive power09. Why is alumi |
|
Answer» 1 dioptre is the power of a lens whose focal length is one metre i.e. 1D=1m^-1. Power of a convex lens is positive and that of a concave lens is negative. A person suffering from hypermetropia needs to wear lens with positive power |
|