Question

a person needs a lens of power + 4.5 D for correction of vision name the type of defect causes of the defect what is the focal length of the lens required for correction the draw a ray diagram to show the formation of image inside Chennai​

Answer 1

Answer:

focalength =1/4.5

f=10/45

f=0.22meter

it's mean they have a defect of hypermetropia