How far from $\backslash (-47\mathrm{.}0-\backslash$mathrm$\{$mm$\}\backslash )-$focal$-$length lens must an object be placed if its image is to be magnified $\backslash (3\mathrm{.}50\backslash$times $\backslash )$ and be virtual? Follow the sign conventions.

$[$Hint: Consider real objects and virtual objects $($formed by some other piece of optics$).]$

Express your answer to three significant figures and include the appropriate units.

$\backslash [$

d$\_\{01\}=$

$\backslash ]$

Incorrect; Try Again; $3$ attempts remaining

Part B

How far from $\backslash (-47\mathrm{.}0-\backslash$mathrm$\{$mm$\}\backslash )-$focal$-$length lens must an object be placed if its image is to be magnified $\backslash (3\mathrm{.}50\backslash$times $\backslash )$ and be real? Follow the sign conventions.

$[$Hint: Consider real objects and virtual objects $($formed by some other piece of optics$).]$

Express your answer to three significant figures and include the appropriate units.

$\backslash [$

d$\_\{02\}=$

$\backslash ]$