What is used to focus the beam of electrons in an electron microscope?
a. electromagnets
b. condenser lens
c. light rays
d. X-ray diffraction
e. glass
Answer: electromagnets
What is used to focus the beam of electrons in an electron microscope?
a. electromagnets
b. condenser lens
c. light rays
d. X-ray diffraction
e. glass
Answer: electromagnets
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