ray daigram of resloving power of telescope
Answers
Explanation:
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Explanation:
In telescope resolving power plays an important role.
In telescope there are 2 lenses one is objective lens and other is eye-piece.
The purpose of objective lens to create an image at the second focal length of the objective and the first focal length of eyepiece.
The image which iscreated will be inverted and diminished.
The purpose of eye-piece is just to enlarge the image formed by the objective lens at the focal length.
The purpose of objective lens is to resolve images as distinct.
For example: -
If we are viewing 2 different stars the purpose of objective lens will be to resolve the stars as 2 distinct stars.
Whenever a ray of light passes through the objective lens it should get focus at a particular point.
But because of the phenomenon of diffraction instead of focussing at a specific point the image gets focussed in and around that area.
Limit of Resolution :
Limit of resolution is defined as the angle subtended by the distant objects on the objective.
This means how small an object can be resolved by the telescope.
It is denoted by dθ.