Study the following situations carefully and answer the questions that follow. A spherical mirror produces an image 48 cm, in front of it, when an object is positioned 12 cm from its pole. Calculate the magnification of the image.

The magnification of the image is$\mathit{ }4$.
The magnification of the image is the ratio of height of the image to the height of the object. 
The height of the image h_i is given as 48 cm, the height of the object ${\mathrm{h}}_{\mathrm{o}}$ is given as12 cm.
Magnification does not have any units as it is the ratio of two lengths.
$\mathrm{M}=\frac{{\mathrm{h}}_{\mathrm{i}}}{{\mathrm{h}}_{\mathrm{o}}}\mathrm{ }$ 

$\Rightarrow \mathrm{M}=\frac{48}{12}\mathrm{ }$ 

$\Rightarrow \mathrm{M}=\mathrm{ }4$