Solved numerical problems on myopia and hypermetropia
Answers
Question 1:
Severe myopia is defined as -6 diopters or worse. What would the minimum focal length of a lens have to be in order to correct for severe myopia?
Answer: -0.1667 m
Question 2:
In humans, the total optical power of the relaxed eye is approximately 60 diopters. If a person is looking at an object 10m away, what would be the distance of the image from the lens to the retina of a relaxed eye, and would this be a real or virtual image?
Answer: It would be a real image at 0.0167m
Question 3:
Frank had perfect vision, but he found if he wore two pairs of glasses together he could still see perfectly. This only worked if the first pair (for myopia) was 5cm away from his face, and the second (for hyperopia) was 3cm away from his face. If the focal length of the second pair is 4.5cm, where would the image of the first lens fall?
Answer: -2.5cm from the first lens
Hey mate here are some examples for you.
Q(3,5,6,7,8) are the examples.
