Question

The reason that the resolving power of our eye is limited is: a. diffraction b. reflection...

The reason that the resolving power of our eye is limited is:
a. diffraction
b. reflection
c. polarization
d. refraction
e. dispersion

Please explain.

Homework Answers

Answer #1

ANS: (a) diffraction

The imaging system's resolution can be limited either by aberration or by diffraction causing blurring of the image. These two phenomena have different origins and are unrelated. Aberrations can be explained by geometrical optics and can in principle be solved by increasing the optical quality — and consequently the cost — of the system.

On the other hand, diffraction comes from the wave nature of light and is determined by the finite aperture of the optical elements. The lens' circular aperture is analogous to a two-dimensional version of the single-slit experiment. Light passing through the lens interferes with itself creating a ring-shape diffraction pattern, known as the Airy pattern, if the wavefront of the transmitted light is taken to be spherical or plane over the exit aperture.

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