As the image of the object has the same orientation as the object, the image must be virtual, and on the opposite side of the object.
Now, `m = (h_2)/(h_1) = - (v)/(u) = 0.2`
`:. v = - 0.2 u`
From `(1)/(f) = (1)/(v) + (1)/(u)` ,
`(1)/(f) = (1)/(-0.2 u) + (1)/(u) = -(4)/(u)`
`f = - (u)/(4)`. As `u` is negative, `f` must be positive,
i.e., `f = + 40 cm`. The mirror must be convex.