I. from air into water
ii. from water into glass

from air to water light change it's path that's refracted and band away from normal,, from water to glass the path of ligh band more away due to it's higher refractive index(1.5)

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.