Question

an individual is nearsighted with near point 13 cm and far point 50 cm when we use a lens of -2D What will be it's near point??​

Answer 1

Answer:

Explanation:

P = 1/f

f= 1/P

f= 1/-2

f= -0.5m = -50 cm

1/v - 1/u = 1/f

-1/13 - 1/u = -1/50

-1/13 + 1/50 = 1/u

1/u = -37/650

u = -650/37

u= - 17.56 cm