Question

In the spherical Mirrors the aperture is?​

Answer 1

Answer:

The diameter of the reflecting surface of spherical mirror is called its aperture. Mirrors whose aperture is much smaller than its radius of curvature, we use R = 2f.

Explanation:

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Answer 2

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.