A ray of light exits from a material with a refractive index of 1.75, traveling into air. The angle of refraction is 25°. What was the original angle of incidence?​

θi = 47.7°

Explanation:

The formula for the refractive index is as follows:

where,

n = refractive index = 1.75

θi = angle of incidence = ?

θr = angle of refraction = 25°

Therefore,

θi = 47.7°

-4 on

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.