A) Convergent of crown and divergent of flint
B) Divergent of crown and convergent of flint
C) Both divergent
D) Both convergent
Correct Answer: A
Solution :
For achromatic telescope objective lens, convergent of crown and divergent of flint is the best combination because \[{{\mu }_{crown}}<{{\mu }_{flint}}\]You need to login to perform this action.
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