MCQ on Electron Microscope with Answers for Students and Exams

An electron microscope uses a beam of electrons instead of light to magnify specimens. It provides very high resolution, allowing scientists to see structures at the molecular or atomic level. There are two main types: transmission electron microscope (TEM) and scanning electron microscope (SEM). It is widely used in biology, medicine, and materials science for ultrastructural studies. This is an MCQ on Electron Microscope and its Applications  with Answers.

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Learn more: Notes on Working Principles of Phase Contrast Microscopy

1. 
What is the primary advantage of using electron microscopy over light microscopy?

2. 
Which type of electron microscopy provides detailed 3D surface imaging of samples?

3. 
In which type of electron microscopy is a sample required to be extremely thin, typically less than 100 nm?

4. 
What is the primary purpose of the condenser lens in a TEM setup?

5. 
What technique is used in electron microscopy to analyze the elemental composition of a sample?

6. 
Which electron microscopy technique is particularly useful for imaging biological samples in their native state?

7. 
In TEM, what is the role of the objective lens?

8. 
What does "high-angle annular dark field" (HAADF) imaging in STEM primarily enhance?

9. 
What is the main limitation of SEM compared to TEM?

10. 
Higher complexity of sample preparation

11. 
Which component of the electron microscope is responsible for generating the electron beam?

12. 
What is a key advantage of using transmission electron microscopy (TEM) over scanning electron microscopy (SEM)?

13. 
In which microscopy technique is the sample typically coated with a conductive layer to prevent charging effects?

14. 
What type of electron microscopy uses a magnetic lens system to focus the electron beam and achieve high magnification?

15. 
Which type of electron microscopy is best suited for observing fine surface structures of nanoparticles?

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mcq on electron microscope

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