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Question
Physics
In Huygens eyepiece
Q. In Huygens eyepiece
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Punjab PMET
Punjab PMET 2008
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A
the cross wires are outside the eyepiece
B
condition for achromatism is satisfied
C
condition for minimum spherical aberration is not satisfied
D
the image formed by the objective is a virtual image
Solution:
Huygen eyepiece satisfies the conditions for elimination of the chromatic aberration as well as spherical aberration.