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Which of the followings is false about scanning electron microscopy?

1 Answer

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Final answer:

SEM can produce 3-D images of sample surfaces without requiring a thin sample, but its resolution is less than that of TEM, contrary to the claim of superior resolution.

Step-by-step explanation:

The statement that is false about scanning electron microscopy (SEM) is that SEM has better resolution than light microscopy. SEM provides detailed 3-D images of sample surfaces by using secondary electrons, does not require a thin sample, and is capable of providing a three-dimensional view.

However, the resolution of SEM is less compared to Transmission Electron Microscopy (TEM), with SEM having roughly ten times less resolution than TEM. SEM uses a focused beam of electrons scanned across the surface and a CCD detector to create the image, while specimens must be specially prepared, including being coated with metal like gold for conductivity and image clarity.

User Dopatraman
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