Question

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

Answer 1

m=+3
v=-30cm
m=-v/u
3=-30/u
3u=-30
u=-30/3
u=-10
that is object is placed at a distance of 10 cm from the mirror

Answer 2

Answer:

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