Question

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

Answer 1

 magnification(m) = -3 (as image is real)
object distance(u)  = -10cm
image distance (v)=?

we know that   m= -v/u

-3 =  -v /-10

-3 = v/10
 
v =-3 * 10

v = - 30 cm


thus the image is 30 cm away from the concave mirror



hope it helps!!!!!

Answer 2

IMAGE FORMED 30 cm IN FRONT OF MIRROR.

Given:

• Object distance = 10 cm
• Magnification is three times
• Real image is formed

To find:

• Image distance ?

Calculation:

First of all, we know that real images are inverted.

So, magnification sign will be negative.

• Also, magnification = -3 means that the image is inverted & magnified.

Now, we know:

$magnification = - \dfrac{v}{u}$

$\implies - 3 = - \dfrac{v}{ - 10}$

$\implies - 3 = \dfrac{v}{ 10}$

$\implies v = - 30 \: cm$

So, image is formed 30 cm in front of mirror.