Berapakah indeks bias suatu medium, apabila cepat rambat cahaya dalam udara 3 x 10 8 m/s?

CAHAYA

▶ Indeks Bias

c = 3 × 10⁸ m/s

cₙ = 1,5 × 10⁸ m/s

n = __ ?

n = c / cₙ

n = 3 × 10⁸ m/s / (1,5 × 10⁸ m/s)

n = 2 ✔