When a glass prism of refracting angle 60^@ is immersed in a liquid its angle of minimum deviation is 30^@. The critical angle of glass with respect to the liquid medium is

When a glass prism of refracting angle 60^@ is immersed in a liquid it

1.	When a glass prism of refracting angle 60^@ is immersed in a liquid its angle of minimum deviation is 30^@. The critical angle of glass with respect to the liquid medium is
Answer» `30^@` `45^@` `60^@` `50^@` Answer :B