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A tank whose bottom is a mirror is filled with water to a depth of 20.2cm....

A tank whose bottom is a mirror is filled with water to a depth of 20.2cm. A small fish floats motionless 7.40cm under the surface of the water. Use the following index of refraction: water = 1.33 and air = 1.00.

a) What is the apparent depth of the reflection of the fish in the bottom of the tank when viewed from directly above?

b) When looking into the tank, at what angle θ with respect to the normal (in the water) will you no longer be able to see the fish through the top surface of the tank?

c) What happens to the light rays from the fish with angles larger than θ with respect to the normal?

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