Physics - Inverted Image

Question

A magnified, inverted image is located at a distance of 40.0 cm from a bi-convex lens with a focal length of 12.0 cm. The object distance is ...

A.) 17.2 cm.

B.) 15.9 cm.

C.) 10.5 cm.

D.) 9.23 cm.

E.) 7.05 cm.

Answer 1

A, sort of.

do = 1/(1/f - 1/di) = 17.14 cm