Microscope Quiz

What is the function of the objective lenses in a microscope?

• To hold the slide in place

• To provide illumination

• To adjust the focus

• To magnify the specimen

Answer explanation

The objective lenses in a microscope are used for magnification of the specimen. They play a vital role in providing an enlarged image of the object which is not visible to the naked eye. None of the other options refer to the purpose of objective lenses in a microscope.

Which part of the microscope is used to adjust the focus roughly?

• Eyepiece

• Coarse focus

• Fine focus

• Stage clip

Answer explanation

The coarse focus knob on a microscope is used for rough focusing. When you first look at your specimen with the microscope, you start on the lowest power and use the coarse focus knob to get it roughly into focus. This makes 'Coarse focus' the correct answer to the question about which part of the microscope is used for rough focusing.

What is the purpose of the stage clip in a microscope?

• To hold the slide in place

• To provide illumination

• To adjust the focus

• To magnify the specimen

Answer explanation

The query asks about the function of the stage clip in a microscope. Among the given options, the purpose of the stage clip is to hold the slide in place. The stage clip is not responsible for providing illumination, adjusting the focus, or magnifying the specimen.

What is the function of the mirror (illuminator) in a microscope?

• To hold the slide in place

• To provide illumination

• To adjust the focus

• To magnify the specimen

Answer explanation

The function of the mirror in a microscope is to provide illumination. It does this by reflecting light from an external light source up through the bottom of the stage where the specimen is. This lighting is essential for viewing the specimen. Thus the correct answer is 'To provide illumination'.

Which part of the microscope is used to adjust the focus precisely?

• Eyepiece

• Coarse focus

• Fine focus

• Stage clip

Answer explanation

The fine focus knob on a microscope is used to adjust the focus on the specimen precisely. It moves the stage (and the specimen) a very small amount to sharpen the focus. Therefore, the correct answer to the question, 'Which part of the microscope is used to adjust the focus precisely?' is 'Fine focus'.

Which part of the microscope is used to move the slide?

• Eyepiece

• Objective lenses

• Stage clip

• Coarse focus

Answer explanation

The question was about which part of the microscope is used to move the slide. The correct answer is 'Stage clip'. The stage clip holds the slide in place and allows it to be moved around for viewing different parts of the specimen.

What is the function of the arm in a microscope?

• To hold the slide in place

• To provide illumination

• To adjust the focus

• To support and carry the microscope

Answer explanation

The question asks about the function of the arm in a microscope. The correct choice is 'To support and carry the microscope'. This is because the arm of the microscope is the part that is used to transport the microscope safely and securely. It is not involved in holding the slide, providing illumination, or adjusting the focus.