Question

An object is placed at a distance of 30 cm in front of a convex mirror of focal length 15 cm write four characteristics of the image formed by the mirror

Answer 1

Four properties of images formed by the given convex mirror are :
1 . Image is always erect
2. Small in size
3. Virtual
4. Always form behind the mirror
between focus and pole

Answer 2

Explanation:

It is given that,

Focal length of the convex mirror, f = +15 cm

Distance of the car from the lens, u = -30 cm

Let v is the image distance. It can be calculated as :

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

$\dfrac{1}{v}=\dfrac{1}{15}-\dfrac{1}{(-30)}$

v = 10 cm

The characteristics of the image formed by the mirror are as follows :

(1) The image is located at a distance of 10 cm from the mirror.

(2) Magnification, $m=\dfrac{-v}{u}=\dfrac{-10}{-30}=0.33$

(3) Image is erect.

(4) Image is virtual.