ANSWER ALL OF THE FOLLOWING QUESTIONS A. Explain briefly. 1. If you and a friend are on opposite sides of hill, you can communicate with walkie-talkies but not with flashlights. Why? 2. Essay. Young's double-slit experiment breaks a single light beam into two sources. Would the same pattern be obtained for two independent sources of light, such as the headlights of a distant car? Explain. Process Questions: 1. While holding the pencils close to your one eye and looking to the light source you can notice that there is a line perpendicular to the slit. What will happen to the position of line of the light if you rotate the pencil to vertical? 2. What happen to the blob of light if you squeeze the slit together? 3. Notice that the blob has blue and red edges, which of the two colours is closer to the light source? What can you say about their wavelengths?Materials: 1. Two new pencils with eraser 2. Transparent scotch tape 3. Mini flashlight or a candle with matches or a lighter Source: https://www.exploratorium.edu/snacks/diffraction Procedure: 1. Light the candle or, if you are using a Mini Maglite, unscrew the top of the flashlight. 2. Wrap one layer of tape around the top of one of the pencils, just below the eraser. 3. Place the light on a stable surface at least one arm's length away from you 4. Hold up the two pencils, side by side, with the erasers at the top. The tape wrapped around one pencil should keep the pencils slightly apart, forming a thin slit between them, just below the tape. Hold both pencils close to one eye (about 1 inch [2.5 cm] away) and look at the light source through the slit between the pencils. Squeeze the pencils together, making the slit smaller