18 Questions
What can cause blurred images or colored edges around objects in optical systems?
Chromatic Aberration
Which method can correct chromatic aberration by using lenses with equal but opposite focal lengths?
Using flint glass and crown lenses
What is one method used to reduce spherical aberration in modern lenses?
Employing a specialized aspherical lens surface
Which optical problem is also known as 'color fringing' or 'purple fringing'?
Chromatic Aberration
What is the purpose of the combination of crown and flint lenses known as Achromatic Doublet?
To correct chromatic aberration
What is the main characteristic of compound microscopes in terms of illumination source?
Use of visible light as illumination source
What causes Chromatic Aberration in optical systems?
Lens dispersion with different colors of light traveling at different speeds
How does a lens correct Chromatic Aberration by filling the space between the specimen and the lens?
Using oil immersion lens
Why must specimens examined under compound microscopes be cut/sliced thinly?
To allow light to pass through for examination
Which type of aberration occurs when a lens cannot bring all wavelengths of color to the same focal plane?
Chromatic Aberration
Which type of microscope uses visible light to observe specimens?
Light microscope
How can spherical aberration in lenses be corrected using specialized surfaces?
Using aspherical surfaces curved outwards on one side
What is the main optical problem associated with simple microscopes due to light rays not converging at the same point?
Spherical aberration
What happens to light rays passing through a lens near its horizontal axis compared to those closer to the edge, leading to spherical aberration?
They refract less than rays closer to the edge
How does spherical aberration affect resolution and clarity in optical systems?
It reduces resolution and clarity
Which of the following is NOT a cause of chromatic aberration in optical systems?
Usage of low-quality lenses
What is the primary method to correct chromatic aberration in optical systems?
Employing achromatic lenses
Among the listed options, which is an example of another type of optical aberration not discussed in the text?
Diffraction grating
Learn about the techniques employed to reduce spherical aberration in modern lenses, including the use of specialized aspherical lens surfaces to converge light rays into a single focal point.
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