1) A photographer trying to take a picture of a big group of people moves away from the group and then refocuses. Does the camera lens move closer or farther away to the sensor? Explain.

3. Two converging lenses above are placed 20.0 cm apart, both with focal lengths of 10.0 cm. A candle is 30 cm away from the first lens. By means of a neat ray tracing, locate the final image formed by the combination of the two lenses. b) Use mathematics to fully describe the image created by the lenses.

5. Consider a converging lens that has a focal length (f). Which one of these is correct about the image when the object is placed in front of the lens at a distance of (2f )? S f60 sof6t The image is virtual, inverted, and magnified The image is real, erect, and magnified The image is real, inverted, and has the same size The image is real, inverted, and diminished The image is real, erect, and diminished The image is virtual, erect, and has the same size as the object 8 9 098 as the object ossf60 s ssf60 f60 ssf60 ssf60 ssf60 s sf60 ssf60 ssf

You are a marine biologist and want to pull a star fish out of a tank of water for testing. Looking from the top of the tank, where is the actual starfish compared to the image of the starfish that you see from the surface? Explain.

2. When an object is placed in front a diverging lens and the image appears on the same side of the lens а. р> 0 q >0 f > 0 b. p>0 q 0 q >0 q 0 С. р>0 f 0 f 0