When an object is placed between the principal focus $(F)$ and the center of curvature $(C)$ of a concave mirror,what kind of image is formed?

In an astronomical telescope,how is the focal length of the objective lens compared to the focal length of the eyepiece?

If the image formed by a convex lens is of the same size as that of the object,what is the position and nature of the image with respect to the lens?

$A$ child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size, and that of the legs smaller. What is the order of combinations for the magic mirror from the top?

Which of the following statements is true for light waves?

Can a plane mirror be called a spherical mirror?