
In a telescope, the objective has a large aperture while the eye-piece has a small aperture. Why?

Important Questions on Optical Instruments

Why all over the world, giant telescopes are of reflecting type? State any one reason.

What is the difference in the construction of the objective of a telescope and that of a microscope?

In a telescope, the objective is larger and the eye-piece is smaller. In a microscope, the objective is smaller and the eye-piece is larger. If a telescope is inverted, will it be able to work as microscope? Is the reverse of this possible?

What is meant by the resolving power of a telescope? State any one method of increasing the resolving power of an astronomical telescope.



In viewing through a magnifying glass, we put our eye quite close to the lens. Does angular magnification change, if the eye ¡s moved away from the lens?
