The terrestrial telescope has one extra lens more than the astronomical telescope. The extra lens is for
-
A.
improving the sharpness -
B.
creating an inverted image -
C.
magnification of the image -
D.
erection of the image
Correct Answer: Option D
Explanation
The extra lens in the terrestrial telescope mounted at the middle between the objective lens and the eye piece is to re-invert the image so that it is upright.