Question

Question Completion Status: Question 5 1 points Save Answer A student set up a magnetic optical bench as you saw in the video. You may assume that the positions stated already account for offsets. Please assume also that the light source and the crossed arrow target were located closest to the end of the scale marked zero. A crossed arrow target was located at position CAT using an object whose sire is so After passing through a lens having focal length located at position the light formed an image located on a screen at position S whose size is } The symbolic expression that relates the object distance, image distance, and focal length is given by ----- ob 1 1 1 011 ---+-) d. None of the offered answers. eb-

Answer 1

1.- The answer is d) None of the ofered answers

First we are looking for an expression that relates object distance, image distance and focal distance. This expression is the thin lesn equation, which has the form:

+ 0 2

where o is the distance to the object, i is the distance to the image and f is the focal distance.

According to the nomenclature of the problem the equation would be:

$\frac{1}{o}+\frac{1}{i}=\frac{1}{CAT}+\frac{1}{S}=\frac{1}{f}$

2.- The answer is e) $\left | m \right |=\frac{i}{o},S+CAT=o+i$

The first equation is related to the general form of the magnification where i is the distance to the image and o is the distance to the object. The second part of the answer is the relation between the different distances. In our example o=CAT and i=S, then S+CAT=o+i, that is the only answer that holds the 2 quantities.

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