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Que. Which of the following are true for electron microscopy?
a. specimen should be thin and dry
b. image is obtained on a phosphorescent screen
c. electron beam must pass through evacuated chamber
d. specimen should be thin and dry, image is obtained on a phosphorescent screen and electron beam must pass through evacuated chamber
Correct Answer:specimen should be thin and dry, image is obtained on a phosphorescent screen and electron beam must pass through evacuated chamber
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