a straight rod is partially immersed in water of refractive index 1.33. Its submerged position appears to be inclined 45° with the surface when viewed vertically through air. What is the actual inclination of the rod?

and 1and 1

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.

i think the answer is a, hope this : )