Between which two points of concave mirror should an object be placed to obtain a magnification of :
(a) - 3 (b) + 2.5 (c) - 0.4
(a) mirror should an object be placed Between focus and centre of curvature to obtain a magnification of -3
(b) mirror should an object be placed Between pole and focus to obtain a magnification of 2.5
(c) mirror should an object be placed Beyond the centre of curvature to obtain a magnification of -0.4