Question

please give the correct solution

Answer 1

hypermetropia or long sightedness

eye ball decrease

focal length increase

correct by using convex lens

Answer 2

(a) Hypermetropia.

* Increase in focal length

* Eyeball becomes small

(b) Please refer your NCERT reader

(c)Convex lens.

1/v - 1/u = 1/f

1/50 - 1/ 25 = 1/f

-1/50 = 1/f

f = 50cm

power = 100/50 = 2D ( if focal length is in cm , the P = 100/f)