An object of size $3.0\;cm$ is placed 14 cm in front of a concave lens of focal length $21\;cm$. Describe the image produced by the less. What happens if the object is moved further from the less ?

Question

$\begin{array}{1 1} 1.8\;cm \\ -8.4\;cm \\ 12\;cm \\ 7\;cm \end{array}$