A lens of focal length 12 cm forms an erect image, three times the size of the object. The distance between the object and image is
Q. A lens of focal length 12 cm forms an erect image, three times the size of the object. The distance between the object and image is:
A. 8 cm
B. 16 cm
C. 24 cm
D. 36 cm
Answer: 8 cm