Activity 4 A. Instructions: Read, understand, and answerthe given question. 1. When you look at yourself at the center of two plane mirrors forming a 900 corner, your image is not reverse from right to left. In other words, you see yourself like others see you. Using a ray diagram explain this obser- vation. 2. In many convenience stores, a mirror is placed in a top corner of the store to allow the clerk to have a full View of the store. Is this mirror spherical concave or convex? Ex- plain your answer. 3. The wall of a room is covered completely with a at mirror. How wide will the room appear? 4. Explain why many types of light bulb are frosted. 5. For safety reasons, a single mirror is to be installed near the exit of an underground parking garage. What type of mirror would you install? And why? 6. What type of mirror do dentists usually use to see the im- age of the teeth? Why? B. Instructions: Read, understand and answer the given problem. 1. A ray of light is incident at 450. What is its angle of re- flection? 2. A man is 1.4 m tall. What minimum size ofa plane mirror does he need to see his full self? G) 3. A concave mirror has a radius of curvature of 12 cm. What is its focal length? 4. What is the speed of light in water if the index of re- fraction in water is 1.33? 5. The speed of light in diamond is 1.24x 108 m/s. What is the index of refraction of Diamond? 6. The index of refraction of beer is about 1.35. What is the speed of light in beer