Question

___ is the ratio of the height of the image to the height of the object.

• A. Curvature
• B. Focus
• C. Magnification
• D. Focal length

Answer 1

The correct option is C

Magnification

Magnification is the ratio of the height of the image $\left(h_i\right)$ to the height of an object $\left(h_o\right)$. It shows how many times the image is as large as the object.

If the distance of the object is taken as $u$ and that of the image as $v$, then:

Magnification of a lens, $m=\frac{h_i}{h_o}=\frac{v}{u}$