Question

An object of height 3 cm is placed at a distance of 60 cm from a convex mirror of focal length 30 cm.Find the position

Answer 1

check answer in image

Answer 2

The image will be formed at a distance of 20 cm from the mirror.

Explanation:

It is given that,

Height of the object, h = 3 cm

Object distance, u = -60 cm

Focal length of the convex mirror, f = +30 cm (for convex mirror it is positive)

Let the object is placed at a distance of v from the mirror. It can be calculated using mirror's formula as :

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

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

$\dfrac{1}{v}=\dfrac{1}{30}-\dfrac{1}{(-60)}$

v = 20 cm

So, the image will be formed at a distance of 20 cm from the mirror. Hence,. this is the required solution.

Learn more,

Mirror's formula

https://brainly.in/question/2617401