Question

An object $5cm$ high is placed at a distance $60cm$ in front of a concave mirror of focal length $10cm$. Find (i) the position and (ii) size of the image.

Answer 1

Scale :
X- axis : $1$ unit = $5cm$
Y-axis : $1$ unit = $1cm$

magnification formula $m=\frac{-v}{u}=\frac{h_i}{h_o}$

Using mirror formula $\frac{1}{f}=\frac{1}{v}+\frac{1}{u}$

thus using above, we have
(i) The position of the object is $12cm$ in front of the mirror
(ii) The size of the image is $1cm$