An astronomical telescope has a large aperture to
An astronomical telescope has a large aperture to
- reduce spherical aberration
- have low dispersion
- increase span of observation
- Have high resolution
Answer
Aperture is the diameter of main, light-gathering lens or mirror. This lens or mirror is called the telescope's objective. The bigger the aperture, the sharper and brighter the view will be. In case of astronomical telescope, if the aperture is large then more light rays from the object will enter the telescope and hence resolution of the image will be high.
The correct option is D.