August 2018 1 16 Report
Jika laju cahaya di udara adalah 3x10^8 m/s, laju cahaya didalam air yang mempunyai indeks bias 1,5 adalah...
a. 4,5x10^8 m/s
b. 2x10^8 m/s
c. 6x10^8m/s
d. 4x10^8m/s
e. 5x10^8m/s

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