Questions
The difference in maximum and minimum magnification of an astronomical telescope is 2.4 then focal length of the objective is
a
78 cm
b
45 cm
c
48 cm
d
60 cm
detailed solution
Correct option is D
maximum magnification is f0fe1+feD and minimum magnification is f0fe their difference is f0D= 2.4 f0 is 60Talk to our academic expert!
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