An astronomical telescope is said to be in normal adjustment when the
A
eye is accommodated
B
focal length of objective lens is longer than that of eye piece
C
final image is at the near point of eye
D
final image is at infinity
Verified Correct Answer: D.
Physical Principles & Numerical Solution
An astronomical telescope is in normal adjustment when the final image is at infinity. This means:
a) Eye is relaxed (no accommodation)
b) Image from objective is at focal point of eyepiece
c) Maximum comfortable magnification for distant viewing
Source: Myschool Past Questions Archive (Record #591)