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    cdc
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    Default Two lenses, of focal lengths 3.1 cm and 28.0 cm, are used to build a small



    telescope.? Two lenses, of focal lengths 3.1 cm and 28.0 cm, are used to build a small telescope.
    (a) Which lens should be the eyepiece?
    28.0 cm
    3.1 cm

    (b) What is the angular magnification?

    (c) How far apart are the two lenses in the telescope?
    cm

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    Default

    the following answer is for an astronomical telescope in normal adjustment [that is ...image at infinity]
    a) focal length of eyepiece should be the smaller one...
    3.1
    b)angular magnification
    =fo/fe where fo=focal length of objective and fe of the other
    9.032
    c)Length=fo+fe
    31.1 cm

    these are the answers i got...and i hope they're correct...if not...srry

    hope ive been of help

 

 

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