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| Q. |
An electron microscope gives higher magnification than an optical microscope, because: |
| A. | It uses more powerful lenses |
| B. | the velocity of electron is smaller than that of visible |
| C. | the electrons have more energy than the light particles |
| D. | the wavelength of electrons is smaller as compared to the wavelength of visible light |
| Answer» D. the wavelength of electrons is smaller as compared to the wavelength of visible light | |
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Explanation: An electron microscope uses a beam of electrons to illuminate a specimen and produce a magnified image. An electron microscope (EM) has greater resolving power than a light-powered optical microscope because electrons have wavelengths about 100,000 times shorter than visible light photons. Magnification is the process of enlarging something only in appearance, not in physical size. |
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