The function of the objective lens of a telescope versus the objective of a microscope?
Aquamarine Blue Beauty asked:
Compare the function of the objective lens of a telescope with the objective of a microscope. In each case, do you want a large focal length or small? Why? Where is your object? Where and what kind of image is formed? Compare the function of the eyepiece in both instruments. Do you want a large focal length or small? Why? Where is your ‘object’? Where and what kind of image is formed?
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Compare the function of the objective lens of a telescope with the objective of a microscope. In each case, do you want a large focal length or small? Why? Where is your object? Where and what kind of image is formed? Compare the function of the eyepiece in both instruments. Do you want a large focal length or small? Why? Where is your ‘object’? Where and what kind of image is formed?

May 20th, 2009 at 5:43 am
objective lens of a telescope=> capture the light of an object that is at infinity and image it at the focal length of the telescope.
objective of a microscope=> capture the light of an object at close proximity and produce a magnified image 52mm away from the flange of the microscope.
eyepiece of a telescope and a microscope serve the same purpose: use a projected image and set it to infinity for observation using your eye. In both cases, the object image is placed at the focal length of the eyepiece lens.
That’s all I can do for you, cannot type all day to answer all your questions.