A double convex lens, lens made of a material of refractive index ${\mu }_1$ is placed inside two liquids or refractive indices ${\mu }_2$ and ${\mu }_3$, as shown ${\mu }_2>{\mu }_1>{\mu }_3$. A wide, parallel beam of light is incident on the lens from the left.

Q. A double convex lens, lens made of a material of refractive index ${\mu }_1$ is placed inside two liquids or refractive indices ${\mu }_2$ and ${\mu }_3$, as shown ${\mu }_2>{\mu }_1>{\mu }_3$. A wide, parallel beam of light is incident on the lens from the left.

Q.

An equi convex lens is made of a material of refractive index ${\mu }_1$ and is placed inside two liquids of refractive indices ${\mu }_2$ and ${\mu }_3$ as shown with ${\mu }_2>{\mu }_1>{\mu }_3$. A wide, parallel beam of light is incident on the lens from the left. The lens will give rise to:

Q. A double convex lens, made of a material of refractive index ${\mu }_1$, is placed inside two liquids of refractive indices $m{u}_{2}and{\mu }_3$ as shown. $m{u}_2>m{u}_1>m{u}_3$. A wide, parallel beam of light is incident on the lens from the left. The lens will give rise to

Q. A meniscus lens is made of a material of refractive index ${\mu }_2$. Both its surfaces have radii of curvature $R$. It has two different media of refractive indices ${\mu }_1$ and ${\mu }_3$ respectively, on its two sides (see figure). Calculate its focal length for ${\mu }_1<{\mu }_2<{\mu }_3$, when light is incident on it as shown.

Q. A hollow double concave lens is made of very thin transparent material. It can be filled with air or either of two liquid $L_1$ or $L_2$ having refractive indices ${\mu }_1$ and ${\mu }_2$ respectively $({\mu }_2>{\mu }_1>1)$. The lens will diverge a parallel beam of light if it is filled