A narrow beam of light incident normally, on one face of an equilateral prism (refractive index 1.45)
being surrounded by water (refractive index 1.44)
At what angle the ray of light emerges out?​

Two models of the same compound are shown. in what way is model b better than model a? model b shows the types of elements in the compound, but model a does not. model b shows the three-dimensional shape of the molecule, but model a does not. model b shows how the atoms in the molecule are connected, but model a does not. model b shows the number of atoms of each element in the molecule, but model a does not