Question

In order to obtain a magnification of, −1.5 with a concave mirror of focal length 16 cm, the object will have to be placed at a distance 

(a) between 6 cm and 16 cm
(b) between 32 cm and 16 cm
(c) between 48 cm and 32 cm
(d) beyond 64 cm

Answer 1

between 32 cm and 16 cm
To obtain a magnification of -1.5, the object needs to be placed between the focus and the centre of curvature