October 2018 1 44 Report
Seorang anak penderita rabun jauh mempunyai titim dekat 10 cm. Agar ia kembali normal, maka harus ditolong dengan lensa...
a. cembung, 6 dioptri
b. cembung, 3,5 dioptri
c. cekung, -6 dioptri
d. cekung, -3,5 dioptri

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