The near point (the smallest distance at which an object can be seen clearly) and the far point (the largest distance at which an object can be seen clearly) are measured for six different people.
|
near point(cm) |
far point(cm) |
| Avishka |
40 |
? |
| Berenice |
30 |
300 |
| Chadwick |
25 |
500 |
| Danya |
25 |
? |
| Edouard |
80 |
200 |
| Francesca |
50 |
? |
Part A. Which, if any, of these people are nearsighted (myopic)? List the first letter of all correct answers in alphabetical order. For example, if Avishka and Edouard are the only nearsighted ones, enter AE.
Part B. Which, if any, of these people require bifocals to correct their vision? List the first letter all correct answers in alphabetical order. For example, if Avishka and Edouard are the ones needing bifocals, enter AE.
Part C. Which, if any, of these people's vision can be corrected using only converging lenses? List all correct answers in alphabetical order. For example, if Avishka and Edouard are the ones whose vision can be thus corrected, enter AE.