The graph between angle of deviation $\left(\delta \right)$ and angle of incidence $\left(i\right)$ for a triangular prism is represented by

The relation between $n_1$ and $n_2$, if behaviour of light ray is as shown in figure is

A bi-convex lens is formed with two thin plano-convex lenses as shown in the figure. Refractive index $n$ of the first lens is $1.5$ and that of the second lens is $1.2$. Both the curved surfaces are of the same radius of curvature $R=14 \mathrm{cm}$. For this bi-convex lens, for an object distance of $40 \mathrm{cm}$, the image distance will be