Jawabanmu

2014-05-24T12:07:45+07:00
Diketahui
V cahaya di air = 2,3 × 10^8
V cahaya di ruang hampa = 3 × 10 ^8
ditanya
n air = ..............?
jawab
n air = V cahaya di ruang hampa /V cahaya di air
n air = 3 × 10 ^8 / 2,3 × 10^8
n air = 1,30