December 2019 1 46 Report
Sebuah benda terletak 25 cm di depan cermin cembung yang jarak fokusnya 20 cm. Agar perbesaran bayangan terjadi 2 kali, benda harus kita geser...

a. 5 cm menjauhi cermin
b. 5 cm mendekati cermin
c. 10 cm menjauhi cermin
d. 10 cm mendekati cermin​
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