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Electron microscope has a high resolution power. This is due to

1. electromagnetic lenses
2. very low wavelength of electron beam
3. low wavelength of light source used
4. high numerical aperture of glass lenses used

Correct answer: very low wavelength of electron beam

Solution

An electron microscope achieves much higher resolution because electrons have a much smaller de Broglie wavelength than visible light. A shorter wavelength reduces the diffraction limit, allowing much finer structures to be resolved.

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