1. Her eye at point P looks into the mirror. Which of the numbered cards can she see reflected in the mirror? N Mirror 2. Cowboy Joe wishes to shoot his assailant by ricocheting a bullet off a mirrored metal plate. To do so, should he simply aim at the mirrored image of his assailant? Explain. 3. Why is the lettering on the front of some vehicles "backward"? 30VAJU8MA 4. Why is it difficult to see the roadway in front of you when driving on a rainy day? 5. What must be the minimum length of a plane mirror in order for you to see a full view of yourself? 6. What effect does your distance from the plane mirror have in the above answer? (Try it and see!) 7. If you were spearing a fish, would you aim above, below, or directly at the observed fish to make a direct hit? If instead you zapped the fish with a laser, would you aim above, below, or directly at the observed fish? Defend your answers. - [Week 5 ends here] --- 8. If the fish in the precious exercise were small and blue, and your laser light were red, what corrections should your make? Explain. 9. When a fish looks upward at an angle of 45°, does it see the sky or the reflection of the bottom? Defend your answer. 10. If you were to send a beam of laser light to a space station above in the atmosphere and just above the horizon, would you aim the laser above, or at the visible space station? Defend your answer. 11. Transparent plastic swimming-pool covers called solar heat sheets have thousands of small lenses made of air-filled bubbles. The lenses in these sheets are advertised to focus heat from the sun into the water and raise its temperature. Do you think the lenses of such sheets do in fact direct more solar energy into the water? Defend your answer. 12. When you stand with your back to the sun, you see a rainbow as a circular arc. Could you move off to one side and then see the rainbow as the segment of an ellipse rather than the segment of a circle? Defend your answer. 13. Two observers standing apart from one another do not see the "same" rainbow. Explain. 14. A rainbow viewed from an airplane may form a complete circle. Where will the shadow of the airplane appear? Explain. 15. Suppose you walk toward a mirror at 2 m/s. How fast do you and your image approach each other? (The answer is not 2 m/s.)

1. Her eye at point P looks into the mirror. Which of the numbered cards can she see reflected in the mirror? N Mirror 2. Cowboy Joe wishes to shoot his assailant by ricocheting a bullet off a mirrored metal plate. To do so, should he simply aim at the mirrored image of his assailant? Explain. 3. Why is the lettering on the front of some vehicles "backward"? 30VAJU8MA 4. Why is it difficult to see the roadway in front of you when driving on a rainy day? 5. What must be the minimum length of a plane mirror in order for you to see a full view of yourself? 6. What effect does your distance from the plane mirror have in the above answer? (Try it and see!) 7. If you were spearing a fish, would you aim above, below, or directly at the observed fish to make a direct hit? If instead you zapped the fish with a laser, would you aim above, below, or directly at the observed fish? Defend your answers. - [Week 5 ends here] --- 8. If the fish in the precious exercise were small and blue, and your laser light were red, what corrections should your make? Explain. 9. When a fish looks upward at an angle of 45°, does it see the sky or the reflection of the bottom? Defend your answer. 10. If you were to send a beam of laser light to a space station above in the atmosphere and just above the horizon, would you aim the laser above, or at the visible space station? Defend your answer. 11. Transparent plastic swimming-pool covers called solar heat sheets have thousands of small lenses made of air-filled bubbles. The lenses in these sheets are advertised to focus heat from the sun into the water and raise its temperature. Do you think the lenses of such sheets do in fact direct more solar energy into the water? Defend your answer. 12. When you stand with your back to the sun, you see a rainbow as a circular arc. Could you move off to one side and then see the rainbow as the segment of an ellipse rather than the segment of a circle? Defend your answer. 13. Two observers standing apart from one another do not see the "same" rainbow. Explain. 14. A rainbow viewed from an airplane may form a complete circle. Where will the shadow of the airplane appear? Explain. 15. Suppose you walk toward a mirror at 2 m/s. How fast do you and your image approach each other? (The answer is not 2 m/s.)