Civil Engineering - Surveying - Discussion
Discussion Forum : Surveying - Section 5 (Q.No. 50)
50.
The Huygen's telescope eye piece
Discussion:
2 comments Page 1 of 1.
Surya said:
6 years ago
achromatic is not satisfied then how?
TseRing said:
3 months ago
D is the answer. The correct answer is: neither (a) nor (b).
Explanation:
Aplanatic means it corrects for spherical aberration and coma.
Achromatic means it corrects for chromatic (colour) aberration.
The Huygens eyepiece is not aplanatic and not fully achromatic, though it reduces some chromatic aberration compared to a single lens. So it doesn't meet the full definition of either.
Answer: Neither (a) nor (b).
Explanation:
Aplanatic means it corrects for spherical aberration and coma.
Achromatic means it corrects for chromatic (colour) aberration.
The Huygens eyepiece is not aplanatic and not fully achromatic, though it reduces some chromatic aberration compared to a single lens. So it doesn't meet the full definition of either.
Answer: Neither (a) nor (b).
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers