Given:
The object distance is u = - 3 cm
The focal length is f = -1.5 cm
To find the image's distance.
Explanation:
Image distance can be calculated using the mirror formula
[tex]\begin{gathered} \frac{1}{u}+\frac{1}{v}=\frac{1}{f} \\ \frac{1}{v}=\frac{1}{f}-\frac{1}{u} \end{gathered}[/tex]
On substituting the values, the image distance will be
[tex]\begin{gathered} \frac{1}{v}=-\frac{1}{1.5}-\frac{1}{3} \\ \frac{1}{v}=-\frac{1}{1} \\ v=-1\text{ cm} \end{gathered}[/tex]
Thus, the image distance is 1 cm.
