Question

The ratio of the size of the image to the size of the object is called the __________.

Answer 1

1. The image produced by the lens is usually not of the same size as the object itself.
2. This property of the lens is called magnification.
3. Magnification: The magnification produced by a lens equals the ratio of the size of the image produced by it to the size of the object.

$\mathrm{Magnification}\left(\mathrm{m}\right)=\frac{\mathrm{Size}\mathrm{of}\mathrm{image}\left(\mathrm{I}\right)}{\mathrm{Size}\mathrm{of}\mathrm{object}\left(\mathrm{O}\right)}$

Hence, The ratio of the size of the image to the size of the object is called the magnification.