Question

A boy focusses a sharp image of a distant object on a screen using a lens. The distance between the approximately equal to?

• A. f/3
• B. 2f
• C. f
• D. f/2

Answer 1

Answer:

C. f

• For a distant object, the distance v (the distance between the lens and the screen where the image is sharply focused) is approximately equal to the focal length of the lens