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A person has near point at 100cm.what power of lens is needed to read at a 20cm if he/she uses A)contacts lens B)spectacles having glasses 2.0 cm sepreated from the eyes?

A person has near point at 100cm.what power of lens is needed to read at a 20cm if he/she uses
A)contacts lens
B)spectacles having glasses 2.0 cm sepreated from the eyes?

Grade:12

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