Question

A concave mirror produces a real image 3 times of the object at a distance of 30cm from the pole of the mirror.find the position of the object

Answer 1

m= -3
u= ?
v=30
m=-v/u
-3= -30/u
u= 10

the object is at distance of 10 cm

Answer 2

Hey,
magnification (m) =3.
v=-30cm.
u=?
So,
m=-v/u
3=30/u
u=-10cm.
Hope this helps you buddy!!
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