October 2018 1 74 Report
Sebuah benda tingginya 10 cm diletakkan di depan lensa cembung yg jarak fokusnya 20 cm. tinggi bayangan 3 kali benda (di belakang lensa). berapakah:
a. kekuatan lensa
b. jarak benda
c. jarak bayangan
d. sifat bayangan

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