A small telescope has an objective of focal length 140 cm and an eye piece of focal length 5.0 cm .

Question

A small telescope has an objective of focal length 140 cm and an eye piece of focal length 5.0 cm . The magnifying power of telescope for viewing a distant object is

Professor PC Thomas Classes · Answer

(b) : Given, $f_0=140 \mathrm{~cm}$ and $f_e=5.0 \mathrm{~cm}$ Magnifying power of a telescope, $M=\frac{f_0}{f_e} \quad 	herefore M=\frac{140}{5.0}=28$