Given:Object distance, \( u = 30 \,\text{cm} \) Focal length of concave mirror, \( f = 20 \,\text{cm} \) Using the mirror sign convention for a concave mirror: \(u = -30 \,\text{cm}, \quad f = -20 \,\text{cm}\) Using: \(\frac{1}{f} = \frac{1}{u} + \frac{1}{v}\) Substitute values: \(\frac{1}{-20} = \frac{1}{-30} + \frac{1}{v}\) \(\frac{1}{v} = -\frac{1}{20} + \frac{1}{30}\) =\(\frac{-3 + 2}{60}\) = -\(\frac{1}{60}\) \(v = -60 \,\text{cm}\) Distance between object and image: \(= |v - u| = |-60 - (-30)| = 30 \,\text{cm}\)