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
Verified Correct Answer: D.
Physical Principles & Numerical Solution
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.
Source: Myschool Past Questions Archive (Record #1513)