Explain why the field diameter decreases with increasing magnification
A) The lens is closer to the specimen and less of the specimen can be illuminated.
B) Increasing magnification decreases the working distance rather than the field diameter.
C) Using the oil-immersion lens limits the ability to illuminate a specimen at high power.
D) Parfocal microscopes gain the ability to stay in focus when changing objective lenses.
Answer: A
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