The diagrams show the appearance of a fork when placed in front of and close to two mirrors A and B, turn by turn.(a) Which mirror is convex?(b) Which mirror is concave?Give reasons for your choice."

Explanation

A concave mirror is a mirror that is curved inward in the middle. It is also known as converging mirrors, due to the fact that when parallel incident rays fall on the surface of the mirror, the rays will reflect and meet at a particular point and form the image. Depending on the position of the object with respect to the mirror, the types of images it forms are real, inverted as well as virtual and erect image, also the size of the images formed are magnified, diminished as well as the same size as that of the object.

A convex mirror is a mirror that is curved outward in the middle. It is also known as diverging mirrors, due to the fact that when parallel incident rays fall on the surface of the mirror, the rays get diverge, and give a wider field of view.

It always forms virtual, erect, and diminished images irrespective of the distance between the object and the mirror.