The side-view mirrors of most cars are convex spherical mirrors (so that the driver can see a wider angle behind the car). Suppose that the side view mirror of your car has a radius of curvature of 18 m, and that another car is 10 m in front of the mirror (behind the car). Ignore any aberration. a) Using the mirror equation to calculate how far the other car appears to be from the mirror. b) Sketch a light ray diagram including the object, the mirror, the image, and the principal light rays. c) Is the image distance smaller or larger than the object distance? Is the image smaller or larger than the object? Answer with calculations.

pility: Good to go The sun is 150,000,000 km from earth; its diameter is 1,400,000 km. For a science project on solar power, a student uses a 24-cm-diameter converging mirror with a focal length of 53 cm to focus sunlight onto an object. This casts an image of the sun on the object. For the most intense heat, the image of the sun should be in focus. a. Where should the object be placed? b. What is the diameter of the image? 2 c. The intensity of the incoming sunlight is 1050 W/m². What is the total power of the light captured by the mirror? d. What is the intensity of sunlight in the projected image? Assume that all of the light captured by the mirror is focused into the image. Focus 88 E 84°F ^

Explain how the following things work. (I.e., What is the source of light and how does it get to your eyes?) a. You are seeing a pencil in front of you. b. You are seeing the homework through your computer monitor.

When looking up from under water, you can see out of the water only through a circular "window" as shown here. Which of the following statements about this phenomenon is FALSE? You can still be seen by people above the water, even if they are above the dark part O You can only see what is directly above the circle You see this effect looking up from under water, but not looking down from above water O The dark part in the picture is actually a reflection of under the water