Which of the following can make a parallel beam of light when light from a point source is incident on it?

For determining focal length of a concave mirror, a teacher asks her students to Identify concave mirror from a few mirrors lying on the table. The reason given by A, B, C and D for picking up the right mirror is-

A : the mirror is depressed at the centre and self-image formed is enlarged and erect.

B : the mirror is raised at the centre and self-image formed is smaller and erect

C : the mirror is plane all over and self-image is of same size

D : the mirror is depressed at the centre and self-image formed is enlarged and inverted.

Correct reason is given by

Magnification produced by a rear-view mirror fitted in vehicles

Rays from Sun converge at a point 15 cm in front of a concave mirror. Where an object should be placed so that size of its image is equal to the size of the object?

Which one of the following is a correct statement?

Under which of the following conditions a concave mirror can form an image on a screen larger than the actual object?

What is the relation between radius of curvature and focal length of spherical mirror?

The main advantage of using a convex mirror as a rear-view mirror in vehicles is

A full-length image of a distant tall building can definitely be seen by using

Which mirror that can give an erect and enlarged image of an object.