How to find total internal reflection

(c) Total internal reflection occurs

when the incident angle is greater than the critical angle.

it doesn't. it was imagined up in the middle ages.

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.