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?
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?
solution:
Given, magnification, $m=-3$
(negative sign is taken as image is real);
object distance $=-10 \mathrm{~cm}$
Now, $m=-\frac{v}{u} \quad$ or $\quad v=-m \times u$
or $\mathrm{v}=-(-3) \times(-10)=-30 \mathrm{~cm}$
Given, magnification, $m=-3$
(negative sign is taken as image is real);
object distance $=-10 \mathrm{~cm}$
Now, $m=-\frac{v}{u} \quad$ or $\quad v=-m \times u$
or $\mathrm{v}=-(-3) \times(-10)=-30 \mathrm{~cm}$
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