Two lenses are used to create an image of a 15.0-cm tall source that is located 43.0 cm to the left of the first lens,which is a biconcave thin polycarbonate lens (index of refraction n = 1.67)and has a radius of curvature of 25.0 cm for both front and back surfaces.The second lens is 36.0 cm to the right of the first lens.The second lens is a converging lens with a focal length magnitude of 25.0 cm.At what position relative to the object does the image get formed?
A)51 cm to the right of the object
B)13 cm to the left of the object
C)130 cm to the right of the object
D)79 cm to the right of the object
E)94 cm to the right of the object

Question

Quizplus · Accepted Answer

The image formed by the first lens is virtual and located to the left of the lens. Using the lens formula and the given parameters, the image distance for the first lens is calculated. This virtual image acts as the object for the second lens. Using the lens formula again for the second lens, the final image position is determined relative to the original object position.

Two Lenses Are Used to Create an Image of a 15.0-Cm