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8 November, 14:28

A student has the high-power lens in position and appears to be intently observing the specimen. The instructor, noting a working distance of about 1 cm, knows the student isn't actually seeing the specimen. How so?

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  1. 8 November, 14:43
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    Based on this the student is out if the focus, and just viewing on the dust. Basically, high - power lens is a non oil immersion lens, with a short working distance of 1cm, which will be about a few millimeters. Hence the student will be out of focus, just carry out a fruitless effort focusing on the dust, missing the focus on the specimen.
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Home » Biology » A student has the high-power lens in position and appears to be intently observing the specimen. The instructor, noting a working distance of about 1 cm, knows the student isn't actually seeing the specimen. How so?
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