Q. To increase the magnifying power of telescope $(f_{o} =$ focal length of the objective and $f_{e} =$ focal length of the eye lens)
A) $f_{o}$ should be large and $f_{e}$ should be small
B) $f_{o}$ should be small and $f_{e}$ should be large
C) $f_{o}$ and $f_{e}$ both should be large
D) $f_{o}$ and $f_{e}$ both should be small
Explanation
(a) By formula $m = \frac{f_{o}}{f_{e}}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.