Question

Farpoint of myopic is 75 cm then what is the focal length of the lens

Answer 1

u=-25cm

v= 75cm

focal length =f

1/v-1/u=1/f(lens formula)

1/75-1/25=1/f

1+3/75=1/f

4/75=1/f

f=75/4

f=18.7(approx)