Express the magnifying power (angular magnification) of an astronomical telescope in terms of the focal lengths of the objective and the eye-piece.
Important Questions on Optical Instruments
In a telescope the focal length of the objective is large while that of the eye-piece is small. Explain its reason, giving the necessary formula.
In a telescope, the objective has a large aperture while the eye-piece has a small aperture. Why?
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?
