An object $\text{AB}$ is placed on the axis of concave mirror of focal length $10\text{cm}$. End $\text{A}$ of the object is at $30\text{cm}$ from mirror. Find the length of the image if length of object is $5\text{cm}$.

Q. Two concave mirrors are placed $40\text{cm}$ apart and are facing each other. A point object lies between them at a distance of $12\text{cm}$ from the mirror of focal length $10\text{cm}$. The other mirror has focal length $15\text{cm}$. Find the location of final image formed after two reflections, first at the mirror nearer to the object and $2^{nd}$ at the other mirror.

Q. A concave and a convex mirror of focal lengths $10\text{cm}$ each are placed at a distance $d\text{cm}$ apart. An object $\text{AB}$ is placed in between the mirrors at a distance of $10\text{cm}$ from the convex mirror. If first ray is incident on the convex mirror and then on the concave mirror then find the distance $d$ between both the mirrors, so that final image will be formed at the object's position.

Q. An object $\text{AB}$ of length $1\text{mm}$ is placed on the axis of concave mirror of focal length $10\text{cm}$. If end $\text{A}$ of the object is at $30\text{cm}$ from the mirror, then length of the image is

Q. The object $AB$ is placed on the axis of a concave mirror of focal length $10\text{cm}$. End $A$ of the object is $30\text{cm}$ from the mirror. Find the length of the image if the length of the object is $5\text{cm}$.

Q. An object of height $1\text{cm}$ is kept perpendicular to the principal axis of a convex mirror of radius of curvature $20\text{cm}$. Distance of the object from the mirror is $20\text{cm}$. If the distance between heads of the image and the object will be $\sqrt{\frac{1601\times x}{y}}$ cm, then what is the value of $y-x$.