Jawabanmu

Jawaban paling cerdas!
2014-05-26T16:47:40+07:00
1/f = 1/s + 1/s'
1/f = 1/25 + 1/-50
f = 50 cm
P = 100/f = 100/50 = 2 dioptri
eh, jenis lensanya apa ya ?
karena fokusnya positif, maka jenis lensanya cembung.
2014-05-26T20:22:02+07:00