why do we consider in our study those spherical mirrors whose aperture is much less than their radius of curvature?
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This is an approximation that is used while deriving the mirror formula. It has following advantages:
Image is free from aberrations (spherical and chromatic)
Sharp and clear image is obtained
Image is free from aberrations (spherical and chromatic)
Sharp and clear image is obtained
Answered by
43
If we take larger aperture than its radius of curvature then the rays that are reflecting will not meet at a single point and image will become blur
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