a)Calculate the refractive power of the cornea when it is in contact with water. The index of refraction for water is 1.33.      b)Calculate the distance from which a person with good vision can see the whites of another person’s eyes.Assume the size of the eye is 1 cm.

6. A ray of light, emitted beneath the surface of an unknown liquid with air above it, undergoes total internal reflection as shown below. What is the index of refraction for the liquid and its likely identification? 13.4 cm. n₂ n₁ 15.0 cm

A camper is trying to start a fire by focusing sunlight onto a piece of paper. The diameter of the sun is 1.39 × 10⁹ m, and its mean distance from the earth is 1.50 × 1011 m. The camper is using a converging lens whose focal length is 10.3 cm. (a) What is the area of the sun's image on the paper? (b) If 0.752 W of sunlight pass through the lens, what is the intensity of the sunlight at the paper? (a) Number i (b) Number i Units Units

$ 03 Problem 2: Light is incident on the face of a silica prism at an angle of 01 = 75° (with respect to the normal to the surface). The apex angle of the prism is = 60°. Given: The value of the index of refraction for silica is n = 1.455. a) Find the angle of refraction at this first surface. b) Find the angle of incidence at the second surface. C) Find the angle of refraction at the second surface.