A Converging Lens of Focal Length 20 Cm Is Placed

Multiple Choice

A converging lens of focal length 20 cm is placed in contact with, and to the left of, a diverging lens of focal length 30 cm.If an object is placed 40 cm to the left of the converging lens, the total magnification is:

A) -3.0
B) -1.5
C) -1.0
D) 2.0
E) 3.0