Q. The magnifying power of an astronomical telescope can be decreased by
✅ Correct Answer: (B)
Increasing the focal length of the eyepiece
Explanation: Increasing the focal length of objective increases the magnifying power of the telescope. Increasing the focal length of the eye-piece decrease the magnifying power of telescope.
Explanation by: Team MCQ Buddy
Increasing the focal length of objective increases the magnifying power of the telescope. Increasing the focal length of the eye-piece decrease the magnifying power of telescope.