Jika indeks bias air =4/3 , indeks bias intan = 5/2 ,

Jika indeks bias air =4/3 , indeks bias intan = 5/2 , indeks bias air relatif terhadap intan adalah(A) 3/10 (D) 15/8 (B) 8/15 (E) 10/3 (C) 7/16