1. A camera with a 50.0 mm focal length lens is being used to photograph a person standing 3.50 m away. How far from the lens must the film be? If the film is 36.0 mm high, what percent of a 1.76 m tall person will fit on it?

2. A certain slide projector has a 65 mm focal length lens. How far away is the screen, if a slide is placed 67.0 mm from the lens and produces a sharp image?

If the slide is 24.0 by 36.0 mm (width and height), what are the dimensions of the image? Image width = _____ Image height = _____ 3. A camera lens used for taking close-up photographs has a focal length of 26.0 mm. The farthest it can be placed from the film is 34.8 mm. What is the closest object that can be photographed?

What is the magnification of this closest object?

4. Suppose your 58.0 mm focal length camera lens is 59.9 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 1.80 cm high?

5. What is the focal length of a magnifying glass that produces a magnification of 2.50 when held 4.00 cm from an object, such as a rare coin?

Calculate the power of the magnifier in diopters.

6. A book held 7.50 cm from a magnifiying lens of focal length f = 11.0 cm. Find the magnification for the book.

Do the same for when the book is held 8.50 cm from the magnifier.

Do the same for when the book is held 9.50 cm from the magnifier.

7. Suppose a 210 mm focal length telephoto lens is being used to photograph mountains 10.0 km away. Where is the image?

What is the height of the image of a 1100 m high cliff on one of the mountains?