Question

an object is placed on the principal axis of a concave mirror of focal length 10 cm at a distance of 8.0 cm from the pole then the position and the nature of the image is

Answer 1

here's your ans the nature of image is real inverted

Answer 2

Explanation:

Given that,

Focal length of concave mirror, f = -10 cm (f of concave mirror is negative)

Object distance, u = -8 cm

We have to find the position and the nature of the image formed. Using mirror's formula :

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

$\dfrac{1}{v}=\dfrac{1}{f}-\dfrac{1}{u}$

$\dfrac{1}{v}=\dfrac{1}{-10}-\dfrac{1}{-8}$

v = 40 cm

Image is formed 40 cm from the mirror.

Magnification, m = -v/u

$m=-\dfrac{40}{-8}=5$

Hence, the image is magnified.