Lesson: Reflected Images
In this lesson, we will learn how to explain the formation of images by focusing light rays in mirrors that have different radii of curvature.
Sample Question Videos
Worksheet: 10 Questions • 1 Video
Some heating coils are located 27.3 cm from the vertex of a concave mirror, along the mirror’s optical axis. The heating element radiates 1.50 kW of infrared radiation and has an area of 100 cm2. Half of the radiated power is reflected and focused by the mirror. If the mirror has a magnification of , what is the intensity of infrared radiation projected by the mirror onto a person standing 3.00 m from the mirror’s vertex, along the mirror’s optical axis?
Calculate the focal length of a mirror formed by the shiny back of a spoon that has a 4 cm radius of curvature.
What is the focal length of the mirror?
What is the mirror’s radius of curvature?