Two lenses, the first with focal length −12.5 cm and the second with focal length 20.0 cm, are separated by 15.0 cm. If an object is placed 50.0 cm in front of the first lens, where is the final image formed?
A) 10.0 cm before the first lens
B) 25.0 cm before the second lens
C) 25.0 cm after the second lens
D) 50.0 cm after the second lens
E) 100 cm after the second lens

Question

Quizplus · Accepted Answer

The Answer of Two lenses, the first with focal length −12.5 cm and the second with focal length 20.0 cm, are separated by 15.0 cm. If an object is placed 50.0 cm in front of the first lens, where is the final image formed?
A) 10.0 cm before the first lens
B) 25.0 cm before the second lens
C) 25.0 cm after the second lens
D) 50.0 cm after the second lens
E) 100 cm after the second lens

Two Lenses, the First with Focal Length −12