NEET | 2018Geometrical OpticsEasy
Question
An astronomical refracting telescope will have large angular magnification and high angular resolution, when it has an objective lens of :-
Options
A.
small focal length and large diameter
B.
large focal length and small diameter
C.
large focal length and large diameter
D.
small focal length and small diameter
Solution
For astronomical refracting telescope
• Angular magnification is more for large focal length
of objective lens
• Resolving power =
Resolving power is high for large diameter.
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