while being viewed The microscope slide rests on the a. base b. condenser Your l

Question

while being viewed The microscope slide rests on the a. base b. condenser Your lab microscope is parfocal. What does this mean? a. The specimen is clearly in focus at this depth. b. The slide should be almost in focus when changing to higher c. iris d. stage magnifications. c. You can easily discriminate two close objects as separate. 3. If the ocular lens magnifies a specimen 10x, and the objective lens used magnifies the specimen 35x, what is the total magnification being used to observe the specimen? 4. How do you clean the lenses of your microscope? a. with a paper towel b. with soap and water c. with special lens paper and cleaner 5. Circle True or False. You should always begin observation of specimens with the oil immersion lens.

Explanation / Answer

1. Answer is D: Stage.

We keep the slide on the stage of the microscope while viewing.

2. Answer is B: The slide should be in focus when changing to higher magnification.

A parfocal is a lens that kept in focus when magnification/focal length are changed.

3. Total magnification will be 35 x 10 = 350X

4. Answer is C. With special lens paper and cleaner.

5. Answer is False. We should always begin with the scanning objective lens.

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