Question

nswer the following questions in brief.
1 What are spherical mirrors? How does the nature and size of the image formed by a concave
mirror vary when it is moved towards the mirror?​

Answer 1

Explanation:

A spherical mirror is a mirror that has the shape of a piece cut out of a spherical surface. There are two types of spherical mirrors: concave and convex mirror.

Since the image in fornt of the concave mirror, its nature will be "Real and Inverted". Thus, the size of image is 2 cm long. The minus sign here shows that the image is formed below the principle axis. That is, it is a real and inverted image.

Answer 2

Explanation:

For a spherical mirror, the optical axis passes through the mirror's center of curvature and the mirror's vertex, as shown in (Figure). A spherical mirror is formed by cutting out a piece of a sphere and silvering either the inside or outside surface