Why all over the world, giant telescopes are of reflecting type? State any one reason.
Important Questions on Optical Instruments
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?
The magnifying power of a simple microscope is inversely proportional to the focal length of the lens. Then, why can we not obtain a very high magnifying power by using a lens of very small focal length?
In a compound microscope, both the objective and the eye-piece should be of small focal lengths. Why?
