Magnification produced by astronominal telescope for normal adjustment is 10 and length of telescope is 1.1m. The magnification when the image is formed at least distance of distinct vision `(D = 25cm)` is-

The magnifying power of an astronomical telescope for normal adjustment is 10 and the length of the telescope is 110cm..Find the magnifying power of the telescope when the image is formed at the least distance of distinct vision for normal eye.

The focal length of the lenses of an astronomical telescope are 50 cm and 5 cm. The length of the telescope when the image is formed at the least distance of distinct vision is

The focal lengths of the lenses of an astronomical telescope are 50cm and 5cm . The length of the telescope when the image is formed at the least distance of distinct vision is