placed a distance I apart along a central optical axis, as shown (drawing not to

Question

placed a distance I apart along a central optical axis, as shown (drawing not to.scalc). place eye (objective lens) Focal point for both lenses (eyeplece) righr next (retina exepiece (eye's lens) The object is "very far" from the objective lens-so its (real, inverted) image forms essentially at its focal point. The eyepiece then acts as a magnifying glass, and the assumption is that you'll use it as such (with comfortable viewing): You will place your naked eye right next to it, and its object will be located just inside its focal point. i) Describe how this instrument works (no need for numbers here). Starting with the light coming from the original object, answer the following for cach lens (including your eye's lens), in the order the light reaches it: Objective lens What is "the object" for this lens? Compared to the original object. Is it upright or upside-down? Compared to the original object... Is it upright or upside-down? What is "the object" for this lens? Where is that "object" located? Is this "object" larger or smaller? Where is the resulting image located? Is this image larger or smaller? Eyepiece Where is that "object" located? Compared to the oxiginal object. Is this "object" larger or smaller? Is it upright or upside-down? Compared to the original object... Is it upright or upside-down? What is "the object" for this lens? Compared to the original object... Where is the resulting image located? Is this image larger or smaller? Eye's lens Where is that "object" located? Is this "object" larger or smaller? Is it upright or upside-down? Where is the resulting image located (no values here, just describe in general)? Compared to the original object. Is this image larger or smaller? Is it upright or upside-down? Pag

Explanation / Answer

for the given telescope scenario

1. Objective lens

a. object for this lens is the object at infinity

b. this object is located at infinity

c. this is the original object hence its sie is the same as that of the original object

d. the object is upright

e. resulting image is located in the focal plane of the pbjective lens

f. compared to the original object the image is smaller and is inverted

2. Eyepiece

a. object for this lens is the image formed by the objective

b. the object is located at the focus of objective and just insude the focal length of the eyepiece

c. compared to the original object, this object is smaller and is inverted

d. the resulting image is located on the same side of the eyepiece

e. compared to the original object the final image is smaller and inverted

3. Eye's lens

a. object for this lens is the image formed by the eyepiece

b. this object is located on the other side of the eyepeiece when seen from the eye's perespective

c. compared to original object this image is smaller and erect

d. the resulting image is locvated at the retina of th eeye

e. compared to original object this image is smaller and erect

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