Question

An object 25cm away from a lens produces a focused image on a film 15cm away.What is the focal length of the converging lens?

Answer 1

The lens formula is given by: 1/f = 1/u + 1/v where f is the focal length, u is the object distance, and v is the image distance. 6. Therefore, the focal length of the converging lens is 75/8 cm, or approximately 9.375 cm.

Answer 2

formula for calculating the focal length of a converging lens is:

1/f = 1/v - 1/u

where f is the focal length of the lens, v is the distance between the lens and the image plane (film), and u is the distance between the lens and the object.

In this case, the object is 25 cm away