Mon November 07, 2011 By:

what is aperture of a spherical mirror?please explain broadly.

Expert Reply
Mon November 07, 2011
Mirror reflect the light that enters into it. The plane surface area of the mirror through which the light rays enter is called aperture.

If we place some opaque object with hole in its center , in-front of the mirror now light can enter only through this hole. Now the aperture of the mirror is reduced.
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