If light enters from air to some medium A having a refractive index of 1.33, then what is the speed of light in the medium A?
1
2.26 × 108\(\rm \frac{m}{s}\)
2
1.97 × 108\(\rm \frac{m}{s}\)
3
1.67 × 108\(\rm \frac{m}{s}\)
4
2.67 × 108\(\rm \frac{m}{s}\)