An object is placed to the left of a thin converging lens with a focal length of 8 cm.A real and inverted image is formed 13.3 cm to the right of the lens.What is the distance of the object from the lens?
A)20.1 cm
B)13.3 cm
C)5.00 cm
D)0.20 cm
E)21.3 cm

Question

Quizplus · Accepted Answer

Using the thin lens equation:

1/f = (1/di) + (1/do)

Where f is the focal length, di is the image distance (13.3 cm), and do is the object distance (unknown).

Plugging in the values, we get:

1/8 = (1/13.3) + (1/do)

Solving for do, we get:

do = 20.1 cm

Therefore, the distance of the object from the lens is 20.1 cm.

The correct answer is A.

An Object Is Placed to the Left of a Thin