Lesson: Thin LensesPhysics
In this lesson, we will learn how to apply the thin lens formula to lenses of different radii of curvature and refractive indices to find their foci.
Sample Question Videos
A camera with a lens of focal length 100 mm is used to photograph the Sun. What is the height of the Sun’s image at the camera’s photosensor? Use a value of km for the diameter of the Sun and use a value of km for the distance to the Sun.
Suppose your 50.0 mm focal length camera lens is 51.0 mm away from the film in the camera.
How far away is an object that is in focus?
What is the height of the object if its image is 2.00 cm high?
A slide projector uses a mm-focal length lens to project images onto a screen.
How far away is the screen if a slide is placed 103 mm from the lens and produces a sharp image on the screen?
If the dimensions of the slide are 24.0 cm by 36.0 mm, what are the dimensions of the image on the screen?