under minimum deviation condition in a prism, if a ray is a incident at an angle 30^@ the angle between the emergent ray and the second refracting surface of the prism is

under minimum deviation condition in a prism, if a ray is a incident a

1.	under minimum deviation condition in a prism, if a ray is a incident at an angle 30^@ the angle between the emergent ray and the second refracting surface of the prism is
Answer» `0^@` `30^@` `45^@` `60^@` ANSWER :D