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1. A person does not see very far: the distant point from him (that is, the maximum distance for which he sees clearly) is 2.7 meters in relation to the eye. What is the contact lens convergence (in diopters) that this person should use to see well into infinity? Should this lens be convergent or divergent? 2. The person's closest point (minimum distance for which he can see clearly) without using the lens is 21 cm. What will be the point next to the person when they are using the contact lens found in item (1)?
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1. A person does not see very far: the distant point from him (that is, the maximum distance for whi...
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