Without her contact lenses, Kat cannot clearly see an object more than 70.0cm away. What should be the focal length of her corrective contact lenses?
1/f = 1/p + 1/q
The Attempt at a Solution
1/f = 1/infinity + 1/-70.0cm = -0.0143cm
f = -70.0 cm
Would anyone be able to please check this answer? Thank you!