Question

C Cone
The real image of an extended object placed in front of a concave mirror is formed 21 Sure of im
a distance of 40 cm from the object. If the image is 3 times bigger than the object
A) enlarge
magnitude of focal length of the mirror is
Insejs-2010-1111 Cl equal
A) 15 cm
B) 10 cm
C) 20 cm
D) 5 cm
REFERENCEMA​

Answer 1

Answer:

.15 cm .is your answer dear