An object is placed at the following distances from a concave mirror of focal length 15 cm, turn by turn :
(a) 35 cm (b) 30 cm (c) 20 cm (d) 10 cm
Which position of the object will produce :
(i) a magnified real image?
(ii) a magnified virtual image?
(iii) a diminished real image?
(iv) an image of same size as the object?
(i) A magnified real image: When the object is placed at a distance of 20 cm from the mirror i.e., between focus and centre of curvature.
(ii) A magnified virtual image: When the object is placed at a distance of 10 cm from the mirror i.e., within its focus.
(iii) A diminished real image: When the object is placed at a distance of 35 cm from the mirror i.e. beyond the centre of curvature.
(iv) An image of same size as the object: When the object is placed at a distance of 30 cm from the mirror i.e., at the centre of curvature.