188. |
Parabolic mirrors
are used instead of spherical mirrors to
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|
A. |
Eliminate chromatic aberration |
|
Parabolic
mirror eliminate spherical aberration. All of the light rays
parallel to the prinicipal axis reflect through the focal point.
The Correct Answer is B. |
|
B. |
Eliminate spherical aberration |
|
|
C. |
Increase the magnification |
|
|
D. |
Decrease the magnification |
|