Physics > Reflection of Light > 5.0 Magnification
Reflection of Light
1.0 Introduction
2.0 Reflection of light
3.0 Basic terminologies of spherical mirrors
3.1 Paraxial approximation
3.2 Spherical mirrors
3.3 Sign convention
3.4 Ray tracing
3.5 Image formation by concave mirror
3.6 Image formation by convex mirror
4.0 Spherical mirror formulae
5.0 Magnification
6.0 Motion of object and image
5.3 Superficial magnification
3.2 Spherical mirrors
3.3 Sign convention
3.4 Ray tracing
3.5 Image formation by concave mirror
3.6 Image formation by convex mirror
When two dimensional object is placed with its plane perpendicular to principal axis, then its magnification is known as superficial magnification or areal magnification.
It is represented as $m_s$.
It is given as, $${m_s} = \frac{{{\text{area of image}}}}{{{\text{area of object}}}} = {m^2}$$ or $${m_s} = \frac{{{v^2}}}{{{u^2}}}$$