Question

A concave mirror produces three times magnified (enlarged) real imageof an object placed at 10 cm in front of it. Where is the image located?​

Answer 1

Answer:

h = -v/u

+3 = -v/-10

v = + 30 cm

Therefore, Image is located 30 cm behind the mirror

Answer 2

Given :

In concave mirror,

Magnification of the mirror = 3 times

object distance = 10cm

To find :

The image distance from the mirror

Solution :

The linear magnification produced by a mirror is equal to the ratio of the image distance to the object distance with a minus sign that is,

$\sf Magnification = - \dfrac{Image \: distance}{Object \: distance}$

(or)

$\sf m = -\dfrac{v}{u}$

where,

• m is magnification
• v is image distance
• u is object distance

$\dashrightarrow \sf m = -\dfrac{v}{u}$

$\dashrightarrow \sf 3= -\dfrac{v}{- 10}$

$\dashrightarrow \sf v = 3 \times 10$

$\dashrightarrow \sf v = 30 \: cm$

Thus, the image distance from the mirror is 30 cm.