A thin prism of 4^@ angle gives a deviation of 2.4^@ What is the value of refractive index of the material of the prism?

A thin prism of 4^@ angle gives a deviation of 2.4^@ What is the value

1.	A thin prism of 4^@ angle gives a deviation of 2.4^@ What is the value of refractive index of the material of the prism?
Answer» 1.6 1.5 1.3 1.2 Answer :A