ask expert A $\backslash (1\mathrm{.}0-\backslash$mathrm$\{$cm$\}\backslash )-$tall object is $80$ cm from a screen. A diverging lens with focal length $-20$ cm is $20$ cm in front of the object.

Part A

What is the focal length of a second lens that will produce a well$-$focused, $\backslash (2\mathrm{.}0-\backslash$mathrm$\{$cm$\}\backslash )-$tall image on the screen?

Express your answer with the appropriate units.

$\backslash [$

f$\_\{2\}=\backslash$square $\backslash$quad$[$

$\backslash ]$

Request Answer

Part B

What is the distance from the screen of the second lens?

Express your answer with the appropriate units.