InterviewSolution
 Saved Bookmarks
    				| 1. | a person suffering from short sighted Ness can see clearly only upon a distance of 2m. find the nature & power of the lens required to correct his vision | 
| Answer» Here, u = - infinity, v = - 2m (or -200cm) 1/f = 1/v - 1/u 1/f = -1/2 + 1/infinity therefore, f=-2m P = 1/f = -1/2 = - 0.5 D hence power of lens req is - 0.5 D | |