An object 8.25 cm from a lens creates a virtual image at -26.8 cm
from the lens. What is the focal
length of the lens?
(Mind your minus signs.)
(Unit = cm)

Listed following are various physical situations that describe how light interacts with matter. match these to the appropriate category. 1) transmission? -visible light meets clear glass -visible light does not pass through a black wall -red light hits a red sweatshirt -light comes from your computer screen -cell phone signals pass through walls -blue light hits a red sweatshirt -white light hits a white piece of paper -light comes from a light bulb