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Question

Who invented the electron microscope?

A
Knoll and Ruska
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B
Robert Brown
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C
Correns
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D
None of the above.
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Solution

The correct option is A Knoll and Ruska
The electron microscope is based on the observing of the specimen with the help of the electron beam focused on the specimen. The scattering of the electrons is studied to obtain the structure of the specimen. The microscope was invented by Knoll and Ruska in the year 1932.
Thus, the correct answer is option A.

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