Answer:
medium 1 = air
medium 2 = Lucite
Step-by-step explanation:
Part a)
here the refractive index of first medium is 1.0003
so from the given table this is the refractive index of air
so medium 1 is AIR
Part b)
As per law of refraction we know that

here we know that



now from Snell's law we will have

so we have

so we have

so medium 2 is LUCITE