https://qualityhomeworkanswers.com/chemistry-homework-help-87-2/

A block is made from a rectangular prism of glass with a depth of 1.00 cm and a refractive index of nglass = 1.40, this is covered with a rectangular prism of ice also with a depth of 1.00 cm and with a refractive index of nice = 1.30. This is shown in the diagram above. A light ray is incident on the top side of this block, making an angle of ?i = 31.1° with the the normal (not drawn to scale).1)