Question

What is the nature of the image formed by a concave mirror if the magnification is 4?

Answer 1

Hint: In order to answer this question, we need to understand the concepts of image formation by a concave mirror. These image formation concepts are supported by mirror equations. In a concave mirror, there is a development of different pictures. The distance between the object and the mirror is the most important factor.

Complete answer:
A concave mirror is a sort of spherical mirror in which the reflecting surface is the sphere's inner curved surface, i.e. the reflecting surface seems to be away from the incident light source with this type of mirror. Because the incident light is reflected inwards (converged) due to their form, they are also known as converging mirrors and are used to focus light.

Both principles of reflection apply to any point on the mirror's curved surface. The normal is drawn along the radius, that is, by connecting the mirror's centre of curvature to the point of incidence. Because the normal to the reflecting surface varies at each point on the mirror, the rays converge after reflection.

The nature of the image generated by a concave mirror will be virtual and erect if the magnification is 4.

Note:When the concave mirror is put very close to the item, it produces a virtual and enlarged picture; however, as the distance between the object and the mirror increases, the size of the image decreases and genuine images are produced. On a screen, these real images can be shown. The concave mirror's focus point and centre of curvature are located in front of the mirror.