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25-01-2024
Physics

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A person can see clearly only up to a distance of 30 cm. He wants to read a book placed at a distane of 50 cm from his eyes. What is the power of the lens he requires for his spectacles?
A. −1.0 D
B. −1.33 D
C. −1.67 D
D. −2.0 D

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