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You switch from a 1.40NA 60x oil immersion objective to a 0.35NA 20x air immersion objective. What are the acceptance angles for each? Compare and comment on the values. Which would you use first to locate the target area on your specimen?
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Final Answer
oil immersion lens: $140^\circ$
air immersion lens: $41^\circ$
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OpenStax College Physics Solution, Chapter 26, Problem 29 (Problems & Exercises) (2:32)

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