Question

Between which two points of a concave mirror should an object be placed so that the magnification is -2.5 .

Answer 1

Answer:

it depends on focal length

Explanation:

m=

$\frac{h}{hi} = m \\ if \:$

h/hi=-2.5

f=should be

as you not gave f

we can keep f=4

1/f=1/4

1/4=v+u

1/4