Question

if an object of 10cm height is placed at a distance of 36 cm from a concave mirror of focal length 12cm.find the position,nature and heigth of image.​

Answer 1

$\bf\huge\boxed{Answer}$

Given :-

Object distance , u =−36 cm

Focal length of concave mirror , f =−12 cm

To find :-

Nature And Heigth Of Image.

Using mirror formula :-

$\frac{1}{v} + \frac{1}{u} = \frac{1}{f}$

$or\: \frac{1}{v} + \frac{1}{ - 36} = \frac{1}{ - 12}$

$\implies \: v \: = - 18$

Magnification :-

$\frac{h _{i} }{h _{o}} = \frac{ - v}{u}$

$or \: \frac{h _{i}}{10} = \frac{ - ( - 18)}{ - 10}$

$\implies \: h _{i} = - 18 \: cm$

Image formed is real and inverted.

$\large{ \underline{ \bold{Thank \: my\: Answer}}}$