What optical instrument can best be constructed with converging lenses of focal lengths 50cm and 5cm?
a
Compound microscope
b
Galileo's telescope
c
Terrestrial telescope
d
Astronomical telescope
Explanation
Correct Option
dVideo Explanation
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Discussions (12)
D4
13 years ago
The ansa is D becos in an astronomical telescope there ar 2 converging lens,the objective lens and the eyepiece.the former is of long focal length and the latter of short focal length.
profchudo
9 years ago
astronomical telescope is used to view distance objects, they have objective and eye piece lens the objective is of long focal length while the eye piece is short focal length 50 is to the objective lens while 5 is to eye piece
