A concave lens can form a real and inverted image, when :
(a) Object is placed at 2f
(b) Object is placed beyond 2f
(c) Object is placed between f and 2f
(d) It can never form a real and
(a) Object is placed at 2f
(b) Object is placed beyond 2f
(c) Object is placed between f and 2f
(d) It can never form a real and