A camera with a 100 mm-focal length lens 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.
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?
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?