Question

Electron microscope, the biggest innovation in microscopy was built on principle of

• A. wave nature of electrons.
• B. total internal reflection of light.
• C. thin film optical interference.
• D. light amplification by stimulated emission of radiation.

Answer 1

The correct option is A wave nature of electrons.

Electron microscopes use signals arising from the interaction of an electron beam with the sample to obtain information about structure, morphology and composition. Electrons are such small particles that, like photons in light, they act as waves.