Question

The magnification of a concave mirror is , when the object is placed between the Focus and the Pole of the mirror.

• A. negative
• B. positive
• C. zero

Answer 1

The correct option is B positive

When the object is placed between the Focus and the Pole, infront of a concave mirror, a virtual, erect and enlarged (magnified) image is formed behind the mirror.
Since the height of the image ($h_i$) is measured upwards from the principal axis in this case, the image height is positive. The object height ($h_o$) is always positive for any kind of spherical mirror.
So, magnification, $m=\frac{h_i}{h_o}$ is positive.