20: An object is placed at 21 cm in front of a concave mirror of radius of curvature 20 cm. A glassslab of thickness 3 cm and refractive index 1.5 is placed close to the mirror in the space betweenthe object and the mirror. Find the position of the final image.

Q. An object is placed 21 cm in front of a concave mirror of radius of curvature 10 cm. A glass slab of thickness 3 cm and refractive index 1.5 is then placed close to the mirror in the space between the object and the mirror . Find the position of the final image formed.

Q. An object is placed 21 cm in front of a concave mirror of radius of curvature 10 cm. A glass slab of thickness 3 cm and $\mu =1.5$ is then placed close to the mirror in the space between the object and the mirror. The position of final image formed is

Q. A point object is placed $33$cm from a convex mirror of curvature radius $=40$cm. A glass plate of thickness $6$cm and refractive index $2.0$ is placed between the object and mirror, close to the mirror. Find the distance of final image from the object.

Q. A slab of glass, of thickness 6 cm and refractive index $\mu =1.5$ is placed in front of a concave mirror as shown in the figure. If the radius of curvature of the mirror is 40 cm and the reflected image coincides with the object, then the distance of the object from the mirror is :

Q. A point object $O$ is placed in front of a concave mirror of focal length $10\text{cm}$. A glass slab of refractive index $\mu =\frac{3}{2}$ and thickness $3\text{cm}$ is inserted between object and mirror. Find the position of final image when the object is placed at a distance of $31\text{cm}$ from the mirror as shown.