Question

To view an enlarged upright image of an object through a simple magnifier, where must the object be located? Which choice is it below?

(A) at the near point
(B) at the focal point of the lens
(C) within the focal length of the lens
(D) between the near point and focal point
(E) within the focal length of the lens, provided the focal length is shorter than the near point distance

Answer 1

The object must be located within the focal length of the lens for a simple magnifier to produce an enlarged upright image, hence the correct answer is (C) within the focal length of the lens.

Step-by-step explanation:

To view an enlarged upright image of an object through a simple magnifier, the object must be located within the focal length of the lens. Therefore, the correct answer to the student's question is (C) within the focal length of the lens. A simple magnifier creates a virtual image when the object is placed closer to it than its focal length, allowing for significant magnification as well as keeping the image upright.

It's important to remember that for comfortable viewing, the eye is most relaxed when viewing at the far point, which is considered to be at infinity or at a great distance, and this is taken advantage of by properly positioning magnified images as if they were at a distance.