Under which of the following conditions, a concave mirror can form an image larger than the actual object?

Figure shows a ray of light as it travels from medium $\mathrm{A}$ to medium $\mathrm{B}$. Refractive index of the medium $\mathrm{B}$ relative to medium $\mathrm{A}$ is

A light ray enters from medium $\mathrm{A}$ to medium $\mathrm{B}$ as shown in the figure. The refractive index of medium $\mathrm{B}$ relative to $\mathrm{A}$ will be 

Beams of light are incident through the holes $\mathrm{A}$ and $\mathrm{B}$ and emerge out of box through the holes $\mathrm{C}$ and $\mathrm{D}$ respectively as shown in the figure, Which of the following could be inside the box?

A beam of light is incident through the holes on side $\mathrm{A}$ and emerges out of the holes on the other face of the box as shown in the figure. Which of the following could be inside the box?