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A concave mirror of small aperture …

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A concave mirror of small aperture forms a sharper image.Why?

    • Posted by Vaibhav Kumar 7 years, 9 months ago

    CBSE > Class 12 > Physics
    • 2 answers

    Akshay Singh 7 years, 9 months ago

    Because it is free from any type of aberration whether it be spherical aberration or the chromatic aberration

    2Thank You

    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.

    1Thank You

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