Draw a ray diagram of an astronomical telescope in the normal adjustmetn position. State two drawbacks of this type of telescope.

Draw path of rays for astronomical telescope in normal adjustment.

The magnifying power of an astronomical telescope in the normal adjustment position is 20.If the length of the telescope is 105 cm in this adujustment ,find the focal lengths of the two lenses.

Draw the ray diagram of acompound microscope.

Draw a neat labeled ray diagram for a simple astronomical telescope using a reflector.

What is the magnifying power of an astronomical telescope in normal adjustment? What is its length?

The magnifying power an astronomical telescope in the normal adjustment position is 100. The distance between the objective and the eyepiece is 101 cm. calculate the focal length of the objective and the eyepiece.

Draw a labelled diagram of an astronomical telescope and explain its working .Give an expressin for its magnifying power.