An astronomical telescope has `f_(o)= 200 cm` and `f_(epsilon) = 4cm`. Telescope is focused to see an object 10 km from the objective. Final image is formed at infinity. Find length L of the tube and the angular magnification of telescope.

An astronomical telescope has an objective of focal length 20 cm and an eyepiece of focal length 4.0 cm. The telescope is focused to see an object 10 Km from the objective .The final image is formed at infinity. Find the length of the tube and the angular magnification produced by the telescope.

An astronomicla telescope has an objective of focal length 20 cm and an eyepiece of focal length 4.0 cm. The telescope is focussed to see an object 10 cmfrom the objective.the fnal imae is formed at infinity.Find the length of the tube and the angular magnification produced by the telescope.

The focal lengths of the objective and eye piece of an astronomical telescope are 25 cm and 2.5 cm respectively. The telescope is fucussed on an object 1.5 m from objective, the final image being formed 25 cm from eye of the observer. Calculate the length of the telescope.

The eye-piece of an astronomical telescope has focal length of 10 cm. The telescope is focused for normal vision of distant objects when the tube length is 1.0 m. Find the focal length of the objective and the magnifying power of the telescope.

An astronomical telescope has objective and eyepiece of focal lengths 40 cm and 4 cm respectively. To view an object 200 cm away from the objective and the image is formed at infinity , the lenses must be separated by a distance

A Galilean telescope has f_(o)= 200cm and f_(epsilon)= 1 cm . The length the tube L and magnifying power if it is used to see object at a large distance in normal adjustment is

An astronomical telescope has angular magnification m=7 for distant object. Distance between objective and eyepeice is 40 cm. final image is formed at infinitely focal length of objective and eyepeice respectively are

An astronomical telescope has angular magnification m=7 for distant object. Distance between objective and eyepeice is 40 cm. final image is formed at infinitely focal length of objective and eyepeice respectively are