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Asked by anmol11_batra | 5th Sep, 2009, 07:15: PM

Expert Answer:

Power convention depends on the type of lens and whether the rays converge or diverge after refrection and not on the side where image is formed. So different sign conventions are followed for a myopic and a hypermetropic eye.

Answered by  | 18th Oct, 2009, 12:10: AM

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