The transmission electron microscope has a resolution of

Options

A. 2,000 nanometres
B. 200 nanometres
C. 2 nanometres
D. 0.2 nanometre

Explanation

To answer the question regarding the resolution of a transmission electron microscope (TEM), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Resolution**:
- Resolution in microscopy refers to the ability to distinguish two points as separate entities. The higher the resolution, the finer the details that can be observed.

2. **Identify the Type of Microscope**:
- The question specifically mentions the transmission electron microscope (TEM). This type of microscope uses a beam of electrons to illuminate a specimen and produce an image.

3. **Know the Characteristics of TEM**:
- TEM uses a monochromatic beam of electrons, which means that the electrons have a single wavelength. This beam is focused using electromagnetic lenses.

4. **Determine the Resolution of TEM**:
- The resolution of a transmission electron microscope is significantly higher than that of light microscopes due to the shorter wavelength of electrons compared to visible light.

5. **Select the Correct Answer**:
- Among the options provided (2,000 nanometers, 200 nanometers, 2 nanometers, or 0.2 nanometers), the resolution of a TEM is typically around 0.2 nanometers. Therefore, the correct answer is **0.2 nanometers**.

### Final Answer:
The transmission electron microscope has a resolution of **0.2 nanometers**.

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