Light microscopy: observing and drawing cells | Exit Quiz | Oak National Academy

Which part of the microscope is the arrow pointing to?

• light source

• eyepiece lens

• objective lens

• stage

Answer explanation

The arrow is pointing to the stage.

Which part of the microscope is the arrow pointing to?

Answer explanation

The arrow is pointing to the eyepiece lens.

Which part of the microscope is the arrow pointing to?

Answer explanation

The arrow is pointing to the objective lens.

What is the purpose of the coarse adjustment knob on a microscope?

• to fine-tune the focus of the specimen

• to quickly bring the specimen into rough focus

• to switch between different objective lenses

• to adjust the intensity of the light source

Answer explanation

You use the coarse focus knob to quickly bring the specimen into rough focus.

Why is it important to start with the lowest magnification objective lens when using a compound microscope?

• to maximize the field of view

• to prevent damage to the objective lenses

• to enhance resolution and clarity

• to speed up the focusing process

Answer explanation

You start with the lowest magnification objective lens to maximise the field of view.

What is the function of the fine adjustment knob on a microscope?

• to change the objective lens

• to quickly bring the specimen into focus

• to adjust the intensity of the light source

• to fine-tune and sharpen the focus of the specimen

Answer explanation

The fine adjustment knob is used to fine-tune and sharpen the focus of the specimen.