A Cup That Is $6.0 \mathrm {~cm}$ Tall Is in Front of a Concave Lens

A cup that is $6.0 \mathrm {~cm}$ tall is in front of a concave lens. The image of the cup is $2.5 \mathrm {~cm}$ tall and $7.5 \mathrm {~cm}$ from the lens. What is the focal length of the lens?

A) $- 13 \mathrm {~cm}$
B) $+ 6.0 \mathrm {~cm}$
C) $+ 18 \mathrm {~cm}$
D) $- 6.0 \mathrm {~cm}$
E) $- 7.5 \mathrm {~cm}$

Correct Answer:

Verified

Unlock this answer now
Get Access to more Verified Answers free of charge

Access For Free