What is the actual definition of aperture of spherical mirrors?
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67
The length along the principal axis from the pole to the principal focus is called the focal length. The area of a convex mirror that is exposed to incident light is called the aperture. If the aperture of a convex mirror is small, then its focal length is equal to half its radius of curvature.
Saijyoti1:
Can this be the definition of aperture? The length of the straight line joining the points of extremities of a spherical mirror is called the aperture.
Answered by
59
The height of the spherical mirror is called it's aperture.
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