A refracting telescope consists of

Reflecting telescope consists of

Reflecting Telescope

If both the object and image are at infinite distances form a refracting telescope its magnifying power will be equal to

An astronomical telescope consists of two convex lenses of focal lengths 20 cm and 4 cm. For the nomal adjustment of the telescope, what is the angular magnification produced by the telescope ?

The astronomical telescope consists of objective and eye-piece. The focal length of the objective is

A giant refracting telescope at an observatory has an objective lens of focal length 15cm .If an eye piece of focal length 1.0cm is used What is the angular magnification of the telescope ?

The sum of focal lengths of the two lenses of a refracting telescope is 105 cm. The focal length of one lens is 20 times that of the other. Determine the total magnification of the telescope when the final image is formed at infinity.

The eyepiece of a refracting telescope has f = 9 cm. In the normal setting, separation betweeen objective and eyepiece is 1.8 m. Find the magnification

An astronomical telescope consists of two thin lenses set 36 cm apart and has a magnifying power 8. calculate the focal length of the lenses.