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The near point and far point of a person are at 60cm and 300 cm respectively. Find the power of lens he should use while reading 30 cm. With this lens on the eye, what maximum distance is clearly visible? |
| Answer» The near point and far point of a person are at 60cm and 300 cm respectively. Find the power of lens he should use while reading 30 cm. With this lens on the eye, what maximum distance is clearly visible? | |