$($Figure $1)$ shows an object and its image formed by a thin lens. Assume that $\backslash ($ L$=15\mathrm{.}4\backslash$mathrm$\{$~cm$\}\backslash )$ and $\backslash ($ y$=3\mathrm{.}05\backslash$mathrm$\{$~mm$\}\backslash ).$

Figure

Part A

What is the focal length of the lens?

Express your answer in centimeters to three significant figures.

Request Answer

Part B

What type of lens is it$?$

converging

diverging

What is the height of the image?

Express your answer in millimeters to three significant figures.

Part D

Is it real or virtual?

virtual

real