An object is placed $20\mathrm{.}0$ cm to the left of a converging lens that has a focal length $f_1=+12\mathrm{.}5cm.$ How far is the image from the lens? $($Give your answer to at least one decimal place.$)$

cm

A screen is placed $53\mathrm{.}3$ cm to the right of the converging lens. A diverging lens is placed between the converging lens and the screen. When the diverging lens is $20\mathrm{.}8$ cm to the right of the converging lens the image formed by the lens combination is located at the screen. What is the focal length $f_2$ of the diverging lens?

$xcm$

Additional Materials

Thin Lenses