Question

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

Answer 1

Step 1, Given data

Distance of object from concave mirror (u) = - 10 cm
Magnification (m) = $3$

Step 2, Finding image distance

We know,
$m=\frac{-v}{u}$

Or we can write
$\Rightarrow v=-mu=-\left(3\right)\times (-10)=30cm$
Hence, The image will be formed behind the concave mirror at a distance of 30 cm from its pole.