a person with defective eye vision cannot see objects distanctly closer than 2m . he want to focus on a ball at a distance of 50 cm find the power and rhe focal length of the lens he needs to use in spectaxles
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the person is suffering from hypermetropia and he needs a convex lens for that ...you solve the problem and after that search for the power by its formula. i.e P = 1/f your answer
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