October 2018 2 812 Report
1. Seorang penderita rabun dekat membaca pd jarak 60 cm. Setelah memakai kacamata ia dapat membacanya pd jarak 30 cm. Fokus lensa tersebut adalah...
a. -60 cm c.+1/6 cm
b. -30 d.+1/30 cm
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