August 2018 1 74 Report
Seorang anak penderita rabun jauh mempunyai titik dekat 10 cm. agar ia kembali normal, maka harus ditolong dengan lensa ?
pilihan jawaban :
a. cembung, 6 dioptri
b. cembung, 3,5 dioptri
c. cekung, -6 dioptri
d. cekung, -3,5 dioptri
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