The _____ telescope is used to observe distant objects on the earth's surface.

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.

The eyepice of an astronomicasl telescope has a focasl length of 10 cm. The telescope is focussed for normal vision of distant objects when the tube length is 1.0 m. find the focal length of the bjective and the magnifying power of the telescope.

The objective of an astronomical telescope has a focal length of 80cm . The telescope is focused for normal vision of distant objects when the tube length is 1.0m .If the focal length of eye piece is f_(e) (in cm ) and magnifying power of telescope is m then the value of (f_(e))/(m) is :

What is the minimum angualr separation between two stars, if a telescope is used to observe them with an objective of aperture 0.2 m . Wavelength of light used is 5900 Å .

A laser beam is used for locating distant objects because

The focal lengths of the objective and the eye-piece of an astronomical telescope are 0.25 m and 0.02m, respectively. The telescope is adjusted to view an object at a distance of 1.5 m from the objective, the final image being 0.25 m from the eye of the observer. Calculate the length of the telescope and the magnification produced by it.

A telescope of aperture diameter 5m is used to observe the moon from the earth. Distance between the moon and earth is 4 xx 10^5 km. Determine the minimum distance between two points on the moon's surface which can be resolved using this telescope. (Wave length of light is 5893 A^@ .

The focal lengths of the objective and the eye-piece of an astronomical telescope are 0.25 m and 0.025 m, respectively. The telescope is focussed on an object 5m from the objective, the final image being formed 0.25 m from the eye of the observer. Calculate the length of the telescope and its magnifying power.

A telescope using an eye piece of focal length 3 cm has a magnification 10 in normal adjustment. If the telescope is now used to view an object placed at a distance of 180 cm from the objective, the new length of the telescope is (assume final image is at infinity).

48.A telescope has an objective of focal length 100cm and an eyepiece of focal length 2.5cm .If you look into the objective (that is into the wrong end) of this telescope you will see distant objects reduced in size.By what factor will the angular size of objects be reduced?