Multiple choice

Which among the following statements is/are true about TEM?

  1. The first Transmission Electron Microscope was built by Knoll and Ruska.
  2. The TEM is capable of imaging at a significantly higher resolution than the light microscopes.
  3. The electronic beam is focused by electromagnetic lenses.

  1. Only 1

  2. Only 2

  3. Only 3

  4. 2 and 3

  5. 1, 2 and 3
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

All are true statements. The first TEM was built by Max Knoll and Ernst Ruska in 1931. The TEMs are capable of imaging at a significantly higher resolution than the light microscopes, owing to the small de Broglie wavelength of electrons. In TEM, electrons are accelerated by an electric potential and focused by the electrostatic and electromagnetic lenses onto the sample.

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