## In This post you will get answer of Q.

A giant refracting telescope at an observatory has an objective lens of focal length $15, m$. If an eye piece of focal length $.0 ,cm$ is used, what is the angular magnification of the telescope?

Solution:

## Here, $f_0 = 15 m, = 15 times 10^2 ,cm$,

$f_e = 1.0 ,cm$

$therefore$ magnification, $m = frac{f_0}{f_e}$

$ = frac{15times 10^2}{1} = 1500$