Civil Engineering - Surveying - Discussion

50. 

The Huygen's telescope eye piece

[A]. is aplanatic
[B]. achromatic
[C]. both (a) and (b)
[D]. neither (a) nor (b).

Answer: Option C

Explanation:

No answer description available for this question.

Surya said: (Jan 20, 2020)  
achromatic is not satisfied then how?

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