7. In part 3, the laser pointer used for the experiment was red. Consult an electromagnetic spectrum chart. What does the color of the laser tell you about the relative frequency of the visible light in the laser? What does the color tell you about the relative wavelength of the visible light in the laser? Dravrr Concluslons 1. How do the images fanned by the concave mirror compare with the images formed by the convex lens? 2. What kind of image, real or virtual, is formed by the concave minor in this experiment? How do you know? 3. In part 3, how does the incident angle (angle in air) compare with the refracted angle (angle in prism)? 1. Imagine you moved the object to a distance closer than ffrom the lens, and tried to find the image on the screen. Why can't you find a clear picture? Where is the image? 2. How would you refine this experiment to use a plane mirror and observe its image? What kind of image does a plane mirror make?Explore Further\fCAUTION: Be careful about any spills as you complete this activity. Have a mop handy. Set up a ripple tank with a wave generator on one side. Turn on the wave generator. Place a boundary in the middle of the ripple tank. What happens to the waves when they hit the boundary? Remove the boundary. Place a at piece of plastic or glass on the bottom of one side of the tank so that it is completer submerged. What happens to the waves when they pass from the deeper water to the shallower water? Remove the plastic or glass. Now place two boundaries in the middle of the tank so that there is an opening between them. What happens to the waves as they pass through the opening? 4. Observing Wave Motion in a Wave-Motion Rope Set up a wave-motion rope, as shown in figure 4. Either attach one end to a fixedobject or have someone hold it. Quickly raise and lower the rope to send a pulse. l.lilhet happens to the pulse when it hits the other end of the rope? Figure 4: Using a wave motion rope 5. Observing Frequency Sound a variety of tuning forks. Each fork is labeled with its frequency. What is the relationship between the length of the tuning fork and the frequency of its sound? What is the relationship between the frequency and the pitch of the note? Turn off all the lights in the room and strike a tuning fork. Turn on the stroboscope and adjust the frequency so that the tines of the fork look like they are moving slowly. What is the tuning fork doing to create a sound? Sound a variety of resonance tubes. The frequency of each tube is found on the side of the tube. What is the relationship between the length of the tube and the pitch of the note it plays