Physics - Geometrical Optics Question with Solution | TestHub

A point object O is kept at a distance of $\mathrm{OP}=\mathrm{u}$. The radius of curvature of the spherical surface APB is $\mathrm{CP}=\mathrm{R}$. The refractive index of the media are ${\mathrm{n}}_1$ and ${\mathrm{n}}_2$ which are as shown in the diagram. Then,

(a) If ${\mathrm{n}}_1>{\mathrm{n}}_2$, image is virtual for all values of ' u '.

(b) If ${\mathrm{n}}_2=2{\mathrm{n}}_1$, image is virtual when $\mathrm{R}>\mathrm{u}$.

(c) The image is real for all values of $\mathrm{u},{\mathrm{n}}_1$ and ${\mathrm{n}}_2$.