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An electron microscope gives better resolution than optical microscope because

Question and options

An electron microscope gives better resolution than optical microscope because
  1. it uses more powerful lenses
  2. the velocity of electrons is smaller than that of light
  3. the electrons have more energy than light photons
  4. the wavelength of electrons is shorter than that of visible light

Answer and explanation

Correct answer: D - the wavelength of electrons is shorter than that of visible light
Resolution is limited by wavelength; accelerated electrons have de Broglie wavelengths far smaller than visible light (~0.005 nm vs 400-700 nm), so the electron microscope resolves finer detail.

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