1.) How far apart are an object and an image formed by an 95

-focal-length converging lens if the image is 3.50

larger than the object and is real?

do + di = ?

I know to use 1/f = 1/do + 1/di and magnification is m = -di/do but i cant figure out how to apply the two together to find the distance between the object and image.

2.) A 48.0

-focal-length converging lens is 28.0

behind a diverging lens. Parallel light strikes the diverging lens. After passing through the converging lens, the light is again parallel.

What is the focal length of the diverging lens?

i set up a ray diagram but i cant figure out how to do the ray tracing when the focal point is 20cm past the second lens and then what the rays will do when they pass through the second lens because you are not starting from the object you are starting from the projected image of the first lens.

Any help is greatly appreciated,

Thank you,

Dank420