December 2019 1 18 Report
20. Sebuah benda diletakkan di depan cermin cembung, membentuk bayangan yang jaraknya 10 cm di belakang cermin cembung. Fokus cermin cembung 30 cm, jarak benda terhadap cermin … cm
a. -7,5
b. 7,5
c. -15
d. 15

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