A diverging lens has a focal length of $-20$ $\text{cm}$, and an object is placed $30$ $\text{cm}$ in front of it. What is the image distance?

• A. $-50$ $\text{cm}$
• B. $-12$ $\text{cm}$
• C. $60$ $\text{cm}$
• D. $12$ $\text{cm}$

Answer: (B)