Draw the ray diagram to show the image formation by a refracting telescope and write the expression for angular magnification for the telescope in normal adjustment.
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For a refracting telescope in normal adjustment:
\[
\boxed{
L=f_o+f_e
}
\]
and
\[
\boxed{
M=-\frac{f_o}{f_e}
}
\]
A larger focal length of the objective and a smaller focal length of the eyepiece give a larger magnifying power.