A submerged scuba diver looks up toward the calm surface of afreshwater lake and notes that the Sun appears to be 35° from thevertical. The diver’s friend is standing on the shore of the lake. Atwhat angle above the horizon does the friend see the sun?

2) A person whose eyes are1.5 m above ground approaches a pool of water of depth 2m and length 1.5 m. At what distance from the edge of the pool will she first see a point at the bottom of the pool?

The reflecting surfaces of two intersecting flatmirrors are at an angle of 66◦, as shown inthe figure. A light ray strikes the horizontalmirror at an angle of 48◦ with respect to themirror’s surface. Calculate the angle φ.Answer in units of ◦.

. A plastic-coated window consists of Perspex and glass. At the Perspex to glassinterface the angle of refraction is 30.00. and the angle of incidence is 20.00. Ifthe refractive index of the glass is 1.75, what is the refractive index of thePerspex?

A student stands dsub0=2.4 m in front of a floor-to-ceiling mirror. Her eyes are hsube=1.53 m above the floor and she holds a flashlight at a distance hsubf=.55 m above the floor. Calculate the angle in degrees that the flashlight makes with respect to the floor if the light is reflected into her eyes.