An object 1.0 cm high is projected onto a screen using a converging lens with a focal length of 35 cm.The image on the screen is 28 cm high.What is the distance of the object from the lens?
A)15 cm
B)34 cm
C)36 cm
D)56 cm
E)61 cm

Question

Quizplus · Accepted Answer

The distance of the object from the lens can be calculated using the thin lens equation:1/f = 1/do + 1/diwhere f is the focal length of the lens, do is the object distance, and di is the image distance.We are given that f = 35 cm and di = 28 cm. Substituting these values into the equation, we get:1/35 = 1/do + 1/28Solving for do, we get:do = 36 cmTherefore, the distance of the object from the lens is 36 cm.

An Object 1