A converging lens forms a three-times magnified image of an object, which can be taken on a screen. If the focal length of the lens is 30 cm, then the distance of the object from the lens is
A. – 55 cm
B. – 50 cm
C. – 45 cm
D. – 40 cm
Answer:D
A converging lens forms a three-times magnified image of an object, which can be taken on a screen. If the focal length of the lens is 30 cm, then the distance of the object from the lens is
A. – 55 cm B. – 50 cm C. – 45 cm D. – 40 cm