A concave mirror of small aperture …
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Posted by Vaibhav Kumar 7 years, 9 months ago
- 2 answers
Amar Kumar 7 years, 9 months ago
The rays of light travelling parallel to the principal axis, after reflection from a concave mirror meet at a single point only, if the beam of light is narrow or if the mirror is of small aperture, if the aperture of the concave mirror is small, the image formed will be sharper,a smaller aperture mirror will be free from spherical abberation, and produce sharper image.
In case, a wide beam of light falls on a concave mirror of large aperture, the rays after reflection from the mirror do not come to focus at a single point. Therefore image formed is not sharper.
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Akshay Singh 7 years, 9 months ago
2Thank You