1. An underwater diver sees the sun 53 °  above horizontal.

How high is the sun above the horizon to a fisherman in a boatabove the diver?

2. A ray of light traveling through air encounters a 2.0 cm-thick sheet of glass at a 45 ? angle of incidence. Assumen = 1.5.

How far does the light ray travel inside the glass beforeemerging on the far side?

3. A near-sighted person might correct his vision by wearingdiverging lenses with focal length f = -60 cm . Whenwearing his glasses, he looks not at actual objects but at thevirtual images of those objects formed by his glasses. Suppose helooks at a 10 cm -long pencil held vertically 1.8 m from hisglasses.

A. Use ray tracing to determine the location of the image.

B. Use ray tracing to determine the height of the image.