C and d are the right answers
A/c/d. that is the anser hope it helps
1 Joule IS 1 newton-meter.
Answer:
The angle between the emergent blue and red light is 
Explanation:
We have according to Snell's law

Since medium from which light enter's is air thus 
Thus for blue incident light we have

Similarly using the same procedure for red light we have

Thus the absolute value of angle between the refracted blue and red light is
