How does magnifying power change with change in length of tube for a given telescope ?

Hoe does magnifying power change with change in length of tube for a given microscope ?

Write the formula for magnifying power and length of tube of an astronomical telescope.

How does magnifying power of a telescope change on decreasing the aperture of its objective lens?Justify your answer.

The focal length of the objective of an astronomical telescope is 1.0 m. If the magnifying power of telescope is 20, then what is the length of the telescope for relaxed eye ?

The magnifying power of telescope is high,if

The magnifying power of a telescope can be increased

The magnifying power of a telescope can be increased

Magnifying power of a telescope is