A-level 2.1.1 Microscopy Quiz

What does magnification describe in microscopy?

• The ability of an optical instrument to see or produce an image with fine detail clearly.

• How much bigger an image appears compared with the original object.

• The ability to distinguish two points as separate entities.

• The process of focusing light to form an image.

Which type of microscope uses a beam of fast-travelling electrons with a wavelength about 0.004 nm?

• Optical microscope

• Laser scanning microscope

• Electron microscope

• Transmission electron microscope

What is the main advantage of using a laser scanning microscope?

• It can magnify up to 1500 times.

• It produces a 2D black-and-white image.

• It has high resolution and depth selectivity.

• It uses a beam of fast-travelling electrons.

What is the formula for calculating magnification?

• Magnification = magnifying power of the objective lens × magnifying power of the eyepiece lens

• Magnification = magnifying power of the eyepiece lens ÷ magnifying power of the objective lens

• Magnification = magnifying power of the objective lens + magnifying power of the eyepiece lens

• Magnification = magnifying power of the eyepiece lens - magnifying power of the objective lens

Which type of microscope is used to study whole living specimens?

• Optical microscope

• Electron microscope

• Transmission electron microscope

• Scanning electron microscope

What is the main difference between magnification and resolution?

• Magnification is how much bigger an image appears, while resolution is the ability to see fine detail.

• Magnification is the ability to see fine detail, while resolution is how much bigger an image appears.

• Magnification and resolution are the same.

• Magnification is used in electron microscopes, while resolution is used in optical microscopes.

Which type of microscope produces a 2D black-and-white image?

• Optical microscope

• Laser scanning microscope

• Electron microscope

• Scanning electron microscope

What is the purpose of using a vacuum in electron microscopes?

• To magnify the image

• To focus the light

• To prevent electrons from being scattered by air molecules

• To enhance the color of the image

Which type of microscope is best suited for observing the surface details of a specimen?

• Optical microscope

• Transmission electron microscope

• Scanning electron microscope

• Laser scanning microscope

What is the primary function of the condenser lens in an optical microscope?

• To magnify the image

• To focus light onto the specimen

• To enhance the resolution

• To adjust the contrast