Microscope worksheet for educational use, featuring questions and a labeled diagram of a microscope.

Problem Analysis:

The task involves answering questions related to microscopes and their components. Let's solve each question step by step.

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#### Q.1: Write True or False for the following statements, write T if True and F if False
- Statement 1: "Microscope" is a combination of two words "micro" meaning small and "scope" meaning viewing.
- True (T): The word "microscope" indeed comes from the Greek roots "micro" (meaning small) and "scope" (meaning to view or examine).

- Statement 2: A compound microscope uses one or more than one magnifying objects.
- True (T): A compound microscope typically uses multiple lenses (an objective lens and an eyepiece lens) to achieve higher magnification.

- Statement 3: When using a microscope, place one hand on the arm and the other hand under the base for support.
- True (T): This is correct handling technique to ensure stability and prevent accidental movement of the microscope.

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#### Q.2: Label the parts of the microscope below
This question requires labeling the parts of a microscope diagram. Since the image is not provided here, I will describe the typical labels for a compound light microscope:

1. Eyepiece (Ocular Lens): The lens closest to the eye.
2. Objective Lenses: The lenses closest to the specimen.
3. Nosepiece (Turret): Holds the objective lenses and can be rotated to select different magnifications.
4. Stage Clips: Hold the slide in place.
5. Stage: The flat platform where the slide is placed.
6. Arm: The part that connects the head to the base.
7. Base: The bottom part of the microscope.
8. Coarse Adjustment Knob: Used for large adjustments in focus.
9. Fine Adjustment Knob: Used for precise focusing.
10. Illuminator/Light Source: Provides light to illuminate the specimen.
11. Diaphragm/Aperture: Controls the amount of light passing through the specimen.
12. Mirror: Reflects light into the illuminator (in some older microscopes).

If you provide the diagram, I can label it specifically.

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#### Q.3: Who made the first compound microscope?
- Answer: Zacharias Janssen
- Explanation: Zacharias Janssen, along with his father Hans Janssen, is credited with inventing the first compound microscope around 1590. They used multiple lenses to achieve magnification.

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#### Q.4: A microscope has 5x ocular lens and 40x objective lens, what is this microscope’s total magnification?
- Formula for Total Magnification:
\[
\text{Total Magnification} = \text{Ocular Lens Magnification} \times \text{Objective Lens Magnification}
\]
- Given:
- Ocular Lens Magnification = 5x
- Objective Lens Magnification = 40x
- Calculation:
\[
\text{Total Magnification} = 5 \times 40 = 200x
\]
- Answer: 200x

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#### Q.5: What is the magnification of the eyepiece?
- Options:
- a) 10x
- b) 20x
- c) 30x
- d) 40x

- Explanation:
The magnification of the eyepiece (ocular lens) is typically standardized and depends on the specific model. Common eyepiece magnifications are 10x, 15x, or 20x. Without additional context, we assume the most common value.

- Answer: a) 10x

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Final Answers:

1. T, T, T
2. Label the parts as described above (diagram needed for exact labeling).
3. Zacharias Janssen
4. 200x
5. a) 10x

Boxed Final Answers:
\[
\boxed{T, T, T, 200x, a)}
\]